These genes survived so many millennia of evolution because most of the genetic disorders are caused due to mutation in genome.
What is Mutation?This is referred to as an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA by different factors.
The factors which cause mutation in individuals are exposure to mutagens or a viral infection which may be due to the high increase in the technology available in the environment in which they live and operate
These genes such as those which cause disorders such as Huntington’s, sickle cell anemia, Tay Sach’s, etc survived so many millennia of evolution because there is still the cause being present in our everyday world which is therefore the reason why it was chosen as the correct choice.
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What condition are needed do an accurate radiometric date to be obtained form a mineral ample?
The necessary condition is that the mineral must remain closed since its formation.
Radiometric dating, radioactive dating, or radioisotope dating is used to date rocks and carbon with trace radioactive impurities.
Heat, pressure, and temperature do not affect isotope decay. Radiometric dating is reliable. This method dates igneous and metamorphic rocks that sedimentary stratigraphic correlation cannot. 300 natural isotopes exist.
The parent's half-life must be known and long enough for it to be present in significant amounts at the time of measurement for accurate radiometric dating. Thus, mineral samples require these conditions for radiometric dating.
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Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the __________ nervous system.\
Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the Somatic nervous system..
So , The correct option is B
The somatic nervous system is one of the peripheral nervous system's divisions. Only the skeletal muscles get motor signals from the central nervous system via the somatic nervous system.
The reactions that are consciously controlled are generated by the skeletal muscles. As a result, the somatic nervous system governs the body's voluntary motions.
Voluntary motions of skeletal muscles, such as walking, sniffing a flower, cycling, and so on, are therefore governed by neurons of somatic division.
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Full Question ;
Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the ________ nervous system.
a) sympathetic
b) somatic
c) parasympathetic
d) autonomic
What are 3 vegetarian choices for protein?
Three vegetarian choices for protein includes Grains and pulses, Dairy products and Soya and tofu.
Protein for vegetarians include beans, peas, and lentils, nuts and seeds and soy products. Protein is one of the most essential nutrients for daily life , as they are required to help your body repair cells and make new ones. Protein also plays crucial role in growth and development in children and expecting mothers .
In general , proteins are required for the repairing and building your body's tissues, They also allows metabolic reactions to occurs at place for easy body function . Hence , vegetarians should include protein from variety of protein sources to ensure proper body functioning .
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In 1973, Stanley Cohen and Herbert Boyer inserted a gene from an African clawed frog into a bacterium. The bacterium then began producing a protein directed by the gene from the frog.
Which is considered a transgenic organism?
Since the bacterium expresses the foreign gene from the African clawed frog, therefore, the bacterium is considered as the transgenic organism.
Gene is the most basic unit of heredity. It is the segment of DNA that encodes for a particular protein. There are various genes present in a single DNA strand. The genes are further composed of alternative forms called the alleles.
Transgenic refers to the phenomenon where DNA segment from an unrelated organism is artificially introduced and expressed in the host's genetic machinery. Such an organism is called the transgenic organism. And the artificially introduced gene is called transgene.
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Question 1 of 10
What about Earth allows it to maintain bodies of water?
OA. Strong magnetic field
OB. Strong gravity
O C. Lunar tides
OD. Plate movements
A small amount of DNA was taken from a fossil of a mammoth found frozen in glacial ice. Genetic technology can be used to produce a large quantity of identical DNA from this mammoth's DNA. In this technology, the original DNA sample is used to
A small amount of DNA was taken from a fossil of a mammoth found frozen in glacial ice. Genetic technology can be used to produce a large quantity of identical DNA from this mammoth's DNA. In this technology, the original DNA sample is used to Act as a template for repeated replication.
What exactly do you mean by "genetic technology"?
Gene technology refers to a wide variety of activities related with understanding gene expression, exploiting natural genetic diversity, changing genes, and transferring genes to other hosts. Genes may be present in all living creatures and are handed down from generation to generation.
Genetic engineering has been used in science and industry to create cancer medicines, brewing yeasts, genetically engineered plants and livestock, and more.
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Can any conclusions be drawn as to the types of habitats likely to contain the most microbes?
Yes, a conclusion can be drawn that living surfaces contain more number of microbes as compared to non-living surfaces.
Microorganisms or microbes can be found in a lot of different conditions in the environment. This proves that they can thrive in a number of different conditions. All microbes require different environmental factors which can boost their growth. Some of them are able to survive in harsh cold habitats like in the ice and also in high temperatures like hot springs.
It has been observed that the number of microbes is high in habitats or surfaces which can suffice the need for nutrition and other factors of the microbe so that it is able to survive and it can be concluded that living surfaces, for example fungal spores, will have more microbes as compared to a non-living surface.
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the sympathetic trunks are located immediately lateral to the ______.
The sympathetic trunks are located immediately lateral to the vertebral bodies of the vertebral column.
Sympathetic trunks are two ganglionated nerve trunks that form the bundle of nerve fibers paired together and run from the base of the skull to the coccyx.
This sympathetic trunk lies just lateral to the vertebral bodies for the entire length of the vertebral column.
Sympathetic trunks are a fundamental part of the sympathetic nervous system while also being a part of the autonomic nervous system. They allow both superior and inferior nerve fibers to travel to the spinal cord to commence the regulatory actions in the body.
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question what was the name of the gene that was affected by this condition . Tell the function of this gene-what does it code for be very specific
The gene affected by this condition is known as the KCNH2 gene. This gene is located on the long arm of chromosome 7 and encodes a voltage-gated potassium channel.
The voltage-gated potassium channel is an integral membrane protein that is responsible for controlling the flow of potassium ions into and out of cells.
The KCNH2 gene is important for the normal functioning of cells in the body. It is essential for the maintenance of the resting membrane potential by regulating the flow of potassium ions. It is also involved in mediating the electrical activity of the heart and plays a critical role in cardiac repolarization. Mutations in the KCNH2 gene can lead to a variety of cardiac arrhythmias and other cardiac conditions, including long QT syndrome.
Long QT syndrome is a genetic disorder that affects the electrical activity of the heart and can cause syncope, cardiac arrest, and even sudden death. The KCNH2 gene is one of the genes that has been linked to this disorder. Mutations in this gene affect the normal functioning of the voltage-gated potassium channel, which can lead to a prolonged QT interval on an electrocardiogram (ECG). This can result in an increased risk of life-threatening arrhythmias and cardiac arrest.
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A curriculum developed by an outside group for use by others is called a(n) _________.
a. peer reviewed program
b. canned program
c. independent program
d. culturally competent program
A curriculum developed by an outside group for use by others is called a canned program. So option b is correct.
A canned program is a pre-packaged curriculum that is designed and developed by an outside organization or group. It is then made available for use by other individuals or organizations without the need for significant modification or customization.
Canned programs are often used in education, where they are commonly used by schools or school districts to provide a standardized curriculum for students. They are also used in other fields, such as business and healthcare, where they provide a set of guidelines and procedures that are intended to be followed by employees or practitioners.
Canned programs are often developed by experts in a particular field, such as educators or subject matter experts, and are based on current research and best practices. They can be a valuable resource for organizations that do not have the resources or expertise to develop their own curriculum.
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If a classification, such that used to identify insects or rocks, is used in a scientific context, it is most often called a(n) ________
Taxonomy is a classification, such that used to identify insects or rocks, is used in a scientific context .
Studying living things including animals, plants, microorganisms, and people in order to categorise them and increase our understanding of them is known as taxonomy. For instance, although from some views humans and whales are separate animals, both are classified as mammals and share a common ancestor.
Taxonomy is the approach and guiding principles of systematic botany and zoology. It organises different plant and animal species into hierarchies of superior and inferior groupings. In the science of taxonomy, all living things, including plants, are named, described, and categorised. Classification is based on variances in behaviour, genetic makeup, and biochemistry. The steps of taxonomy are characterization, identification, and categorization.
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Geographic isolation can cause which of the following?
a Hybridization
b Allopatric Speciation
c Sympatric Speciation
d Polyploidy
How should the sperm motility be categorized in this microscopic field of a semen sample viewed at 400X magnification
The sperm motility can be categorized in this microscopic field of a semen sample viewed at 400X magnification - Non-Progressive motility = 2; immotile = 3
Fast and slow progressive motility are calculated from the speed at which sperm migrating the flagella migrate at a certain volume percentage (range 0% to 100%) by counting 200 sperm.
Decreased sperm motility may be a symptom of disorders associated with male accessory gland secretion and the sequential ejection of these glands.
Routine sperm analysis should contain at least 50% progressively motile class A and B sperm. Sperm viability should be checked if more than 50% of the sperm are fixed. Persistent reduced mobility is a good indicator of infertility and is actually the more important outcome when making decisions about treatment options for couples.
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What are some of the factors that can affect a change in the frequency of genetic alleles in a population?
Genetic drift, natural selection and gene flow are some of the factors that can affect a change in the frequency of genetic alleles in a population.
Alleles are basically two or more versions of the same gene present in the DNA. Allelic frequencies basically determine the number of times a particular allele of a gene is found in a specific population. The allelic frequency of a population changes over time and is dictated by a few factors like natural selection, gene flow and genetic drift.
Natural selection is the process by which the organisms which have desirable characteristics are able to survive over the ones who do not. Genetic drift is the process in which a change in allelic frequency is observed due to chance. Gene flow is when there is a movement of genes in and out of a particular population.
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What describes the meeting of organisms that have different homozygous alleles for a single trait?
The term "monohybrid cross" refers to the mating of organisms with various identical alleles for the same characteristic of a single trait. Thus the correct answer is (A). Monohybrid cross.
Two organisms that have different variations at the same genetic locus are combined to form a monohybrid cross. In a monohybrid cross, two or more mutations at a single gene locus control the character(s) under examination. To carry out such a cross, each parent is chosen to be homozygous or true breeding for a specific trait (locus). The monohybrid ratio, also known as the distribution of second-generation (F2) offspring, is often used to determine if a cross qualifies as a monohybrid cross. It shows a cross between two separate parents, each of whom possesses distinct features and different alleles of the same set of genes. In this creature, two identical genes occur in several forms. A monohybrid cross is created when different organisms with varied identical pair genes for the same trait mate.
The complete question is:
What describes the meeting of organisms that have different homozygous alleles for a single trait?
(a). monohybrid cross
(b). dihybrid cross
(c). homozygous cross
(d). heterozygous cross
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What are the 3 factors that cause natural selection?
The 3 factors that cause natural selection are given as, reproduction.
heredity, variation in characteristics.
The variation in phenotypic variance-driven individual survival and reproduction is known as natural selection. The generational evolution of a population's heritable features is a fundamental mechanism of evolution. Charles Darwin popularized the term "natural selection" by comparing it with artificial selection, which in his view is intentional while natural selection is not. There are variations in every community of creatures. This occurs in part as a result of the possibility of random mutations occurring in an organism's genome, which its offspring may inherit. Throughout their lives, people's experiences and genetic makeup combine to produce a variety of phenotypes.
A genome's environment consists of the cellular molecular biology, as well as other cells, individuals, populations, species, and abiotic factors.
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Which of the following statements is CORRECT concerning the concept of sex and dreams? a. Men and women typically dream about similar things. b. Men dream more each night than women. c. Research reports that men and women differ in the things they dream about. d. Women tend to dream twice as much as men.
Answer: D I believe
Explanation:
When a person looks at a bright light, tiny muscles in the eye contract so less light can enter the eye. Which are most likely the characteristics of this muscle
At the point when an individual glance at a brilliant light, minuscule muscles in the eye contract so less light can enter the eye. These are in all probability the attributes of this muscle nonstriated, compulsory, and connected to the eyeball.
They are smooth muscles (nonstriated) that are not controlled intentionally. You don't get those minuscule muscles on your own will when you check a brilliant light out. It is additionally connected to the eyeball since it agrees to guarantee the most un-conceivable measure of light gets to your eye.
A few capabilities are automatically performed, for example, breathing, processing, heart pulsating, eye reflexes, and so on, however, a few compulsory activities have intentional control partially - models are breathing, salivation, deglutition (gulping), poop, micturition (pee) and others.
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What implications could this have for this species of slug from an evolutionary standpoint? What potential advantages or disadvantages might this mutation have?
Positive mutations are essential for evolution to occur. They raise a living thing's chances of surviving or procreating. Deadly mutations can give rise to cancer or genetic diseases.
Are mutations typically detrimental?While most mutations are beneficial, some can also be dangerous. A dangerous mutation might cause a genetic illness or a cancerous condition. Chromosome-level mutations are still another type. Chromosomes, which are little, threadlike organelles present in the cell nucleus, carry genes.
Why do mutations cause issues?A variation can make a protein malfunction or not be created at all by altering the gene's instructions for producing it. A variation can impair normal development or result in a disease when it changes a protein that is essential to the organism.
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Nutrients and ions can pass directly from cell to cell through special membrane junctions known as ________.
Nutrients and ions can pass directly from cell to cell through special membrane junctions known as gap junctions.
Gap junctions are structures composed of transmembrane proteins that enable communication between cells. They are found in most animal cells and play a critical role in the coordination of cellular activities.
Gap junctions are important for maintaining homeostasis in the body. They allow for an exchange of ions, metabolites, and other molecules between cells. This process helps to maintain a balance of nutrients and ions throughout the body. Gap junctions are also involved in the coordination of cellular activities such as cell growth, differentiation, and cell migration.
Gap junctions are composed of two connexons, or hemichannels. The connexons are composed of six transmembrane proteins, referred to as connexins. The connexins form a channel between the two cells, allowing for the exchange of small molecules and ions. The connexons can open and close in response to a variety of external and internal signals, allowing for a tightly regulated exchange of materials.
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Which concept should be used to describe the functioning of the serratus anterior as it assists the anterior deltoid during shoulder flexion
Answer:
Synergist an agent that increases the effectiveness of another agent when combined with it.
What are the 3 Mendel's laws explain each one?
Mendel's laws are the principles of inheritance that Gregor Mendel uncovered via his research with pea plants. The dominance law, the law of segregation, and the law of autonomous assortment were the three laws that Mendel presented.
According to the law of dominance, if a person possesses two different alleles for the same trait, one will be dominant and the other recessive. The recessive allele does not express itself in the phenotypic, whereas the dominant allele does.
The law of segregation: This law states that during the formation of gametes, the two alleles for a given gene separate from each other so that each gamete receives only one allele. This means that when the gametes unite at fertilization, only one allele from each parent is passed on to the offspring for a given gene.
The law of independent assortment: This law states that the inheritance of one trait does not affect the inheritance of another trait. In other words, the alleles for different traits are inherited independently of one another.
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In third-degree AV block, there is no electrical communication between the atria and ventricles, so there is no relationship between the P waves and the _________.
In third-degree, or complete, heart block there is a shortfall of AV nodal conduction, and the P waves are never connected with the QRS edifices. At the end of the day, the supraventricular driving forces produced don't lead to the ventricles.
Third-degree AV block demonstrates a total loss of correspondence between the atria and the ventricles. Without fitting conduction through the AV hub, the SA hub can't act to control the pulse, and heart result can reduce auxiliary to loss of coordination of the atria and the ventricles.
Electrical signs don't go from your atria to your ventricles with this kind. There is a finished disappointment in electrical conduction. This can bring about no heartbeat or a listless heartbeat on the off chance that a reinforcement pulse is available.
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7
How do carbon dioxide and oxygen move into and out of a mesophyll cell?
A active transport
B
diffusion
osmosis
D transpiration
Answer:
Diffusion
Explanation:
Diffusion is the net movement of particles
A scientist genetically engineered a grain cereal. The genetically engineered variety can produce its own vitamins and is drought resistant. What is the likely impact of growing such a cereal crop on the society
The correct response is (C) since it would help the hungry people. Cereal grains that have been genetically engineered offer several benefits for civilisation.
Both farmers and the poor would gain from a GM grain variety that can produce its own vitamins and is drought tolerant.
The multiple environmental challenges affecting agricultural output have been further exacerbated by drought. Even in the absence of much rain or water, crop varieties that are resistant to drought provide a high yield. In areas that are prone to drought, these kinds have generated a significant yield.
Vitamins are necessary for a healthy diet. They are necessary for many different bodily metabolic activities. Thus, including genes that code for the synthesis of vitamins in cereal grains such as rice aids in feeding the population that is undernourished.
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Full Question ;
A scientist genetically engineered a grain cereal. The genetically engineered variety can produce its own vitamins and is drought resistant. What is the likely impact of growing such a cereal crop on the society?
a. May trigger an adverse climate change
b. May worsen the water crisis around the world
c.Would be beneficial for the malnourished population
d. Would increase the shortage of food around the world
What color of leaf absorbs more light?
Chlorophyll, which is the pigment primarily responsible for the green color of leaves, absorbs light most efficiently in the blue and red parts of the spectrum.
Chlorophyll absorbs light in the blue and red regions of the spectrum because these are the wavelengths of light that are most useful for photosynthesis. The chlorophyll reflects green light, which is why leaves appear green. Other pigments such as carotenoids and anthocyanins, which give the leaves yellow, orange, and red colors respectively, also reflect certain colors and absorb other colors. In general, a leaf that appears darker in color will absorb more light than a leaf that appears lighter in color, because a darker leaf has more pigments that can absorb light. However, it is important to note that a leaf's color is not the only factor that determines how much light it can absorb. The thickness of the leaf, the angle of the light, and the presence of other substances on the leaf surface can also affect how much light the leaf can absorb.
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Mesosaurus was a freshwater reptile whose fossil was found in the northwest part of South America and __________. Alfred Wegener used the placement of this fossil as scientific proof of his continental drift theory.
Mesosaurus was a freshwater reptile whose fossil was found in the northwest part of South America and the southeast part of Africa Alfred Wegener used the placement of this fossil as scientific proof of his continental drift theory .
Alfred Wegener amassed a plethora of data to back up his idea, including geological "fit" and fossil evidence. It is crucial to note that Wegener did not present the following particular fossil data to support his claim.
Wegener did not gather the fossils, but he drew attention to the concept of utilizing scientific documents saying that there were remains of species extant on several continents to support his argument.
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The BRCA genes produce DNA repair proteins. Genetic testing is available that can determine if a person has a mutation in the BRCA genes that makes the proteins less able to function. What is the result of a BRCA mutation
A BRCA gene mutation is an alteration in the genes that produce the proteins responsible for DNA repair. These proteins are essential for maintaining the integrity of the cell’s DNA and for preventing cancer.
The presence of a BRCA mutation increases the risk of developing certain types of cancer, such as breast, ovarian and prostate. Women with a BRCA mutation have up to an 85 percent risk of developing breast cancer, and up to a 60 percent risk of developing ovarian cancer. Prostate cancer is more likely to affect men who have a BRCA mutation.
A BRCA mutation can also be inherited, meaning that it can be passed from one generation to the next. Genetic testing is available to determine if a person has a BRCA mutation, and if so, to identify the specific mutation. This information can help to inform decisions about cancer screening and preventive measures.
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A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals
The genotype of the F1 individuals in this cross is heterozygous, containing both the alleles for tallness and white flowers and the alleles for dwarfism and red flowers. The phenotype of the F1 individuals is tall plants with white flowers.
The dwarf, red snapdragon crossed with a plant homozygous for tallness and white flowers is an example of a monohybrid cross. A monohybrid cross is a type of genetic cross that only involves the inheritance of one trait, such as flower color and plant height. In this particular cross, the dwarf, red flower snapdragon is being crossed with a plant homozygous for tallness and white flowers.
The genotype of the F1 individuals in this cross will be heterozygous, meaning they will possess both the alleles for tallness and white flowers and the alleles for dwarfism and red flowers. The phenotype of the F1 individuals will be tall plants with white flowers. This is because the recessive alleles for dwarfism and red flowers will be masked by the dominant alleles for tallness and white flowers.
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What are 4 things that cause natural selection?
Natural selection consists of four components: variation, inheritance, rapid population growth, and differential survival and reproduction.
Natural selection is the process by which organisms with advantageous changes survive and reproduce more frequently. Adaptation is an inherited variation that increases an organism's chances of survival.
Individuals in a population are naturally variable, which means they differ in some ways. This variation indicates that some people have traits that are better suited to their environment than others.
Evolution refers to the gradual changes that occur in organisms over time that result in the formation of more complex forms. The study of the history of the evolution of newer forms of life on Earth from pre-existing forms over time is known as evolutionary biology.
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