This pedigree supports the fact that widow's peak is due to a dominant allele because if it were due to a recessive allele and both parents show the recessive phenotype, then all of the offspring would have a widow's peak.
What is the widow Peak gene?
A widow's peak is a distinctive, V-shaped hairline that tends to run in families. Despite the myths, it's probably no more significant than other genetic traits such as curly hair or a cleft chin. Some people prefer to downplay their widow's peak and some want to show it off.
The following genetic disorders are linked to the widow's peak: Arskog syndrome is a rare genetic condition that primarily affects men. Children with Aarskog syndrome have short stature in addition to deformities of the face, limbs, and genitalia.
There is a 75% likelihood that any of the offspring of parents who are heterozygous (Ww) will have a widow's peak.
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Describe an example of a plant cell that is specialized for a specific function. What is special about the cell that allows it to perform this specific function?
A plant cell type that is specialized for a specific function is the mesophyll cells in the leaves, which contain many chloroplasts to perform photosynthesis.
What is cell differentiation?Cell differentiation refers to the specialization by which cells can perform specific functions.
Mesophyll cells in the plant leaves are specialized cells that contain chloroplasts, which are organelles where photosynthesis occurs.
In conclusion, a plant cell type that is specialized for a specific function is the mesophyll cells in the leaves, which contain many chloroplasts to perform photosynthesis.
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Select the correct answer. from which sphere of earth did this food originate? deep fried three pieces of chicken legs overlapped each other. a. biosphere b. atmosphere c. troposphere d. hydrosphere e. geosphere
Deep-fried three pieces of chicken legs overlapping each other originated from Biosphere.
a. Biosphere is the region of the earth where life exists, it can be the areas on land, air, or water. The biosphere consists of the lithosphere, atmosphere, and hydrosphere. Chicken is a terrestrial organism; hence, it can be found in the lithosphere, a part of the biosphere.
b. Atmosphere is the envelope of air or gases around the earth's surface, it contains gases like oxygen, nitrogen, carbon dioxide, etc. It protects the lithosphere from harmful radiations from the sun. Hence, it is an incorrect option.
c. Troposphere is a layer of atmosphere that extends from a height of 6 km to 10 km. It is the atmospheric layer that is present right above the lithosphere. This provides us with oxygen and maintains the temperature of the earth. Hence, it is an incorrect option.
d. Hydrosphere: The entire amount of water on a planet is known as the hydrosphere. Water that is present on the planet's surface, beneath, and in the atmosphere all belong to the hydrosphere. The hydrosphere of a planet can exist as liquid, vapor, or ice. Hence, it is an incorrect option.
e. Geosphere is made up of all the rocks and minerals found on Earth, from the molten rock and heavy metals in the planet's center to the sand on beaches and mountain tops. It includes all the abiotic components of the earth. Hence, it is an incorrect option.
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Answer:
Biosphere, i got it right on my test
Explanation:
Which structure of viruses can mutate over time and lead to the development of new strains?.
The Proteinaceous structure of the virus can mutate over time and lead to the development of new strains.
What is Mutation?The mutation may be defined as the phenomenon of altering the sudden, stable, and inheritable genomic sequences of the organisms.
The outer layer of the virus is made of proteins and is hence known as a capsid. This layer is responsible for the allocation of mutations over time and leads to the development of new strains with respect to protein structures.
The changes in protein structures alter the whole physiology, metabolic, and anatomy of viruses accordingly.
Therefore, it is well described above.
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When encountering a powerboat in darkness or reduced visibility, what do visible white and red lights indicate?.
Sickle cell anemia is due to an autosomal recessive trait. A man and woman are both carriers of the recessive allele. What is the probability that their first child will have sickle cell disease
The probability that their first child will have sickle cell disease is 0.25.
How, explain your answer?A man and a woman both are carriers of sickle cell anaemia.
The sickle cell anaemia genotype is ss whereas for producing normal haemoglobin, we have SS or Ss (Carrier).
When both man and woman are carriers, we have
Ss, Ss.
Thus, the probability that the couple would have a child that was also a carrier of sickle cell anemia is 0.25.
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haemophilia is an x-linked recessive disorder that is always pass their generations that can be traced by using a pedigree what is the probability that the female child of Charles and Marie will suffer from hemophilia
The probability of the female child of Charles and Marie suffering from hemophilia is 50% or 0.5.
What is the probability of hemophilia?Hemophilia is a disease that is linked to the X-chromosome.
The probability of having female who suffers from hemophilia depends on the genotype of the parents.
Assuming that the genotype of the parents are as follows:
Father: XcY --> hemophilic
Mother: XXc --> carrier
A cross between the parents will produce two female offspring with genotypes, XcXc and XXc.
Therefore, the probability of the female child of Charles and Marie suffering from hemophilia is 50% or 0.5.
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Which is the least likely reason that pigs have been chosen as donors for humans in the process of
xenotransplantation?
•
Pigs are free of known diseases.
O Pigs are cost-effective to raise.
O Pigs have the same DNA as humans.
O Pigs are quick breeding.
Answer:Pigs have the same DNA as humans
Explanation:
The scientific explanation for global warming is very dependent on the _______ atom. a. chlorine b. carbon c. oxygen d. hydrogen
Answer: b. Carbon
Explanation:
Answer:
b. carbon
Explanation:
Carbon in our atmosphere, especially carbon dioxide, contributes greatly to global warming.
The degree to which a muscle cell can stretch depends on its: The degree to which a muscle cell can stretch depends on its: excitability. conductivity. distensibility. contractility.
The degree to which a muscle cell can stretch depends on its Distensibility.
What are muscle cells?The cells that make up muscular tissue are referred to as myocytes, or muscle cells. The human body contains three different types of muscle cells: cardiac, skeletal, and smooth. Due to their lengthy and fibrous nature, cardiac and skeletal myocytes are commonly referred to as muscle fibers.
Five major properties of the muscular system:
Excitable or Irritable,Contractible,Extensible,Elasticity,Adaptability.A muscle's extensibility refers to its capacity for stretching. Elbow flexion requires the elbow extensor muscles to extend in order for flexion to take place. Spasticity is a lack of extensibility.
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Using the idea of concentration gradient explain why the purple colour of potassium permaganate gradually spreads throughout the water in the jar
The purple color of potassium permanganate gradually spreads throughout the water in the jar by the process of diffusion.
Diffusion is the process of movement of a substance from the region of higher concentration to the regions of lower concentration. Diffusion occurs in liquids as well as gases. Potassium permanganate is a purple color compound, when it is added in a jar of water it spreads throughout the water by the virtue of diffusion. The concentration of potassium permanganate is higher at one point and the other regions in the jar have its nil or low concentrations initially, this leads to the set up of a concentration gradient. As time passes diffusion occurs and the particles of potassium permanganate keep on migrating to the regions of low concentration until the concentration is uniform throughout the jar. Ultimately, it spread throughout the jar making the water purple.
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hy does the structure of the plasma membrane make this type of transport necessary for fluids?
a diagram showing the process of endocytosis
The structure of the plasma membrane makes this type of transport necessary for fluids is discussed below:
What do you mean by phospholipid membrane?The membrane that divides the interior of the cell from the external environment is known as the plasma membrane, sometimes known as the cell membrane, and is present in all cells. A cell wall is affixed to the plasma membrane on the exterior of bacterial and plant cells.
Because water and other polar or charged substances cannot easily traverse the hydrophobic core of the membrane, the phospholipid bilayer created by these interactions serves as an effective barrier between the interior and exterior of the cell.
The complete sentence of question is:
Why does the structure of the plasma membrane make this type of transport necessary for fluids
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An increase in plasma levels of ACTH leads to A. increased plasma glucagon levels B. increased plasma cortisol levels C. increased plasma parathyroid hormone levels D. increased plasma vasopressin levels E. increased plasm epinephrine levels
An increase in plasma levels of ACTH leads to B. increased plasma cortisol levels.
If your cortisol ranges are too high or too low, it is able to suggest you have got a disease of your adrenal glands, trouble along with your pituitary gland, or a tumor that makes cortisol. high degrees of cortisol can also appear if you take massive doses of certain steroid medicines, such as prednisone, for the long term.
Cortisol raises blood sugar via freeing saved glucose, whilst insulin lowers blood sugar. Having chronically high cortisol stages can result in continual excessive blood sugar (hyperglycemia). This may reason for type 2 diabetes.
The cortisol blood test measures the level of cortisol within the blood. Cortisol is a steroid (glucocorticoid or corticosteroid) hormone produced by the adrenal gland. Cortisol can also be measured using a urine or saliva test.
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Can u think of three factors which might affect how much energy someone will need
Gender, age and body weight are the three factors.
What are the effects of gender, age and body weight on energy expenditure?Body weight:
Energy consumption while at rest is determined by body size and weight. Due to the higher maintenance costs associated with a larger body, a heavier person has a higher resting energy requirement. The most unpredictable part of overall energy expenditure is activity-induced energy expenditure. Since larger subjects' activity energy expenditure is not higher in proportion to the expense of moving with a higher body weight, smaller and leaner subjects often move more. As a result of changes in body size and body composition, eating causes variations in energy expenditure.
Gender:
In comparison to girls of the same size and age, adult males frequently have 10–20 percent more muscle mass. Because muscle burns more calories than fat, men have greater basal metabolic rates (BMR). As a result, men need 5–10% more energy than women.
Age:
Compared to adults, children and adolescents require more energy for growth and development. As people age, their body composition changes and their energy needs decrease, resulting in a decrease in BMR. As people age, many of them become less active.
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If water were a nonpolar molecule, how would its properties be different?
Answer:
water would not be able to form hydrogen bonds
Explanation:
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Who is and who is not recommended to receive a flu vaccine? Why do these recommendations exist?
Why is it important for the CDC to update its flu vaccination recommendations each year?
Paul ekman and walter friesen traveled to new guinea to study the meaning of various facial expressions in the primitive south fore tribe. What major conclusion did they reach?.
The conclusion they reached was that the six major emotional expressions appear to be universal.
What are facial expressions?Facial expressions are the various movement of the face that shows the emotional state of an individual.
The six major emotional expressions are :
anger, happiness, fear, surprise, disgust and sadness.These are be expressed by any individual in any part of the world.
Therefore, the conclusion they reached was that the six major emotional expressions appear to be universal.
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The concept of ____ explains why children of parents who are at the extreme ends of a normal (bell-curve) distribution for a phenotype are usually closer to the population average for the phenotype
The concept of regression to the mean explains why children of parents who are at the extreme ends of a normal (bell-curve) distribution for a phenotype are usually closer to the population average for the phenotype.
Regression toward the mean simply means that the likelihood of the subsequent random occurrence being less extreme after an extreme random event is low. Francis Galton was the first to describe regression toward the mean. He carried out a study in 1886 to determine the relationship between children's heights and their parents. After adjusting for the height disparity between men and women (by multiplying each woman's height by 1.08), he measured the heights of 928 adult children and the matching 205 parent couples and discovered something intriguing. The average height of a kid's parents was typically higher than that of the child, but less extreme (closer to the mean). Therefore, the child was frequently shorter if the parents were particularly tall. The child tended to be very tall if the parents were short.learn more about regression to the mean here: https://brainly.com/question/16539587
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If you are planning a
vacation to the beach and
find out that the town has
prevailing winds coming
from the ocean. What is the
weather likely to be?
A. Damp and very cold
B. Dry and cold
C. Mild and damp
OD. Dry and warm
The weather likely to be : (A). Damp and very cold
Weather can be defined as the state or nature of the atmosphere in a particular place and at a given time with respect to heat, cloudiness, dryness, sunshine, wind, rain etc.
The weather is influenced on a regular basis by deferent factors, some are natural while others are artificial.
In conclusion, The weather likely to be : (A). Damp and very cold
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A lymphoma of unknown origin characterized by progressive enlargement of lymphoid tissue and symptoms of fever, weakness, night sweats, and weight loss is:
A lymphoma of unknown origin characterized by progressive enlargement of lymphoid tissue and symptoms of fever, weakness, night sweats, and weight loss is Hodgkin’s disease (Hodgkin’s lymphoma).
What is a lymphoma?Lymphoma is a broad term for cancer that begins in cells of the lymph system.It is of two main types: Hodgkin lymphoma and non-Hodgkin lymphoma (NHL).What is Hodgkin’s lymphoma?Hodgkin's lymphoma is a type of cancer that affects the lymphatic system, which is part of the body's germ-fighting immune system.It is caused due to a mutation in the DNA of a type of white blood cell called B lymphocytes.The lymphocytes grow out of control causing swollen lymph nodes and growths throughout the body.Learn more about B-lymphocytes here:
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18. What should be the frequency of the AA, Aa, and aa genotype if the population is in Hardy-Weinberg equilibrium
If the population is in Hardy-Weinberg equilibrium, the genotype frequencies should be 0.49 AA, 0.42 Aa, and . 09 aa.
Frequency of genotypes "AA" and "Aa". The frequency of AA is equal to p2 and the frequency of Aa is equal to 2pq. Therefore, using the above information, the frequency of AA is 16% (that is, p2 is 0.4 x 0.4 = 0.16) and Aa is 48% (2pq = 2 x 0.4 x 0.6 = 0.48).
Scientists need to look at at least two generations to find out if the population is in Hardy-Weinberg equilibrium. If the allele frequency is the same for both generations, the population is in Hardy-Weinberg equilibrium.
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A(n) ________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis. A(n) ________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis. mouse zebra shark human cat
A(n) shark is an example of an organism that can sometimes reproduce asexually by parthenogenesis.
What is parthenogenesis?Parthenogenesis is defined as a special type of asexual reproduction in living organisms which involves the development of female gametes without any fertilization.
However too parthenogenesis occurs in some plants.
There are three different forms of parthenogenesis; these are:
ArrhenotokyThelytokyDeuterotoky.In conclusion, shark is an example of an organism that can sometimes reproduce asexually by parthenogenesis.
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The green area between the CDC and USDA select agents and toxins represents agents and toxins covered by both agencies. These are termed __________ agents/toxins.
The green area between the CDC and USDA select agents and toxins represents agents and toxins covered by both agencies. These are termed biological agents/toxins.
What is CDC?The Centers for Disease Control and Prevention (CDC) and the United States Department of Agriculture (USDA)
What is CDC selected agents?Select agents are biological agents and poisons that have been found to have the potential to seriously endanger the public's health and safety, the health of animals and plants, or the quality of products made from those animals or plants.
What is the special agents of CDC?The CDC sent out its Epidemic Intelligence Service, which is made up of public health specialists in its postdoctoral program who are trained to look into threats to public health. Since the organization's founding, the CDC has trained about 3,600 "Disease Detectives."
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Would it have been possible to determine the identity of the unknown if a whole egg was used instead of only the albumin
The identity of the unknown organism can be identified more efficiently if whole egg is used instead of only albumin.
Would it have been possible to find out the identity of unknown from the whole egg?Yes, it would have been possible to determine the identity of the unknown if a whole egg was used instead of only the albumin because the whole egg provides the more information about the organisms as compared to only albumin.
So we can conclude that the identity of the unknown organism can be identified more efficiently if whole egg is used instead of only albumin.
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____________ is translated by the ribosomes and contains the code that specifies the sequence of amino acids in a polypeptide chain.
mRNA (Messenger RNA) is translated by ribosomes and contains the code that specifies the sequence of amino acids in polypeptide chain.
A single-stranded ribonucleic acid molecule is known as messenger RNA(mRNA) plays a major role in translation.
Translation is the method by which an mRNA codes for a certain protein. mRNA provides the template for protein synthesis.
The ribosome translates the mRNA that is produced from the DNA into a chain of certain amino acids and protein synthesis is facilitated by this amino acid sequence.
The genetic code, which connects the DNA sequence to the amino acid sequence of proteins, is used to "read" the mRNA. Each group of three nucleotides in mRNA forms a codon, and each codon corresponds to a particular amino acid (triplet code).
Thus mRNA contains the code that specifies the sequence of amino acids in a polypeptide chain.
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The gas exchange during cellular respiration involves _____ moving into cells and ____ moving out of cells. The gas exchange during cellular respiration involves _____ moving into cells and ____ moving out of cells. methane; nitrous oxide nitrous oxide; oxygen oxygen; carbon dioxide carbon dioxide; oxygen
Answer:
The gas exchange during cellular respiration involves oxygen moving into cells and carbon dioxide moving out of cells.
Explanation:
"...the process by which organisms combine oxygen with foodstuff molecules, diverging the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water." - Britannica
The gas exchange during cellular respiration involves oxygen moving into cells and carbon dioxide moving out of cells.
During gas change oxygen actions from the lungs to the bloodstream. on an equal time, carbon dioxide passes from the blood to the lungs. This happens within the lungs among the alveoli and a network of tiny blood vessels known as capillaries, which might be located in the walls of the alveoli.
Three strategies are critical for the switch of oxygen from the out of doors air to the blood flowing through the lungs: airflow, diffusion, and perfusion. ventilation is the manner through which air moves in and out of the lungs.
The lungs and respiratory system permit us to respire. they create oxygen into our bodies (called a concept, or inhalation) and send carbon dioxide out (referred to as expiration, or exhalation). This alternate of oxygen and carbon dioxide is referred to as respiratory.
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PLEASE ANSWER QUICK, I’LL GIVE BRAINLIEST TO THE CORRECT ONE!
1. What are the independent and dependent variables in each of the experiments?
2. What information should be added to the diagram to give the reader a better understanding of how these experiments
were conducted?
3. What items should have been CONTROLLED in the experiments?
4. How much confidence would you have in the conclusion of experiment 3 if you found out that the temperature was not
controlled? Explain your reasoning.
The independent variables are temperature, airflow, and light intensity and the dependent variable is the volume of water lost.
The initial volume of water should be known.
The initial volume of water should have been controlled.
The results of experiment 3 are not valid if the temperature is not controlled.
What is evaporation?
The surface phenomenon in which a liquid is converted into a vapor is defined as evaporation. The surface phenomenon means that only the exposed layer of the liquid will be affected.
This is different from boiling as boiling is a bulk phenomenon in which the entire volume of the liquid is affected and converted to vapor.
Also, unlike boiling, evaporation can happen at any temperature but it is faster at high temperatures. Evaporation is also affected by the speed of the wind, light intensity, and humidity.
Therefore, in this experiment, where the rate of evaporation in different variables is being measured,
The independent variables are temperature, airflow, and light intensity and the dependent variable is the volume of water lost. The initial volume of water should be known. The initial volume of water should have been controlled. The results of experiment 3 are not valid if the temperature is not controlled.
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3. What term describes a plant's response to external stimuli like light, gravity, and touch?
A. auxins
B. tropisms
C. differential growth
D. germination
Answer:t
Explanation:
Because of the presence of both activation and inactivation gates, voltage-gated Na channels can A. be activated B. all of these C. be closed and not capable of opening D. be closed but capable of opening E. none of these
Because of the presence of both activation and inactivation gates, voltage-gated Na channels can be all of these.
Sodium voltage-gated channels can be either closed, open, or inactive. Voltage-gated sodium channels are closed when at rest. Both an activation gate and an inactivation gate are present in voltage-gated sodium channels. Although the inactivation gate is open, the activation gate is closed. This conformation is closed but capable of opening. Some of the activation gates open as a result of membrane depolarization brought on by a stimulus. Both the activation and inactivation gates will be opened at this point. As sodium ions enter the cells, nearby activation gates will open. A greater amount of sodium will enter the cells as a result, initiating an action potential.Both gates open when certain depolarization thresholds are reached. Action potential increases to its maximum as sodium rushes into the cell. The inactivation gate will gradually close and the permeability of the membrane to sodium ions will decrease. The channel is now in a state known as "closed but not capable of opening." Up until the membrane potential reaches its resting state, this occurs. The channels once more assume the "closed but capable of opening" conformation when resting values are attained.learn more about Na channels here: https://brainly.com/question/12977601
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Which of the following fractures is associated with bruising around the ears and blood coming from the nose? Basilar skull fracture Orbit fracture Mandibular fracture Maxilla fracture
Explain how dr. collins used critical thinking to develop his concussion-monitoring device.
Dr. Collins used and applied the facts and symptoms of concussions to develop the concussion monitoring machine. He also monitored the effect that a concussion imparted on the cognition of an individual.
Critical thinking is a section of cognition that is regulated by the prefrontal cortex, this region is involved with problem-solving and cognitive exercises. A concussion is a traumatic injury to the head which could involve any part of the brain. Primarily if there is a concussion that has affected the prefrontal cortex, it will automatically affect the cognition and critical thinking abilities of an individual.
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