Answer: Mutation. The allelic variations that make evolution possible are generated by the process of mutation, but new mutations change gene frequencies very slowly, because mutation rates are low. Assume that the gene allele A1 mutates to allele A2 at a rate m per generation and that at a given time the frequency of A1 is p.
Explanation:
For cell reproduction, what do normal cells do?
what is produced by mitosis?
When a parent cell splits to create two identical daughter cells, the process of the nuclear division known as mitosis takes place in eukaryotic cells.
What is meant by mitosis?
DNA, a molecule found on chromosomes, is the genetic information carrier. They are linearly arranged genes that are present in couples in the cell's nucleus. Genes also are arranged in pairs, and each pair produces a coding that results in the production of a distinct protein.
Mitosis is a sort of cell division that makes sure each new daughter cell formed when a cell splits possess the same genomic structure.
Two cells referred to known as daughter cells are created during mitosis. Any newly formed daughter cells must have genetic material that is similar to that of the parent cell, and the number of chromosomes must stay constant.
Therefore two identical daughter cells are produced as a result of mitosis.
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Drag each item to the correct location. (2 points)
Geocentric Model
Heliocentric Model
Options:
::
The orbits of the planets are circular,
:: Includes eight planets.
:: The Sun is at the center of the solar system.
:: The orbits of the planets are elliptical
! Includes five planets.
:: Earth is at the center
the solar system
Answer:
Geocentric ModelEarth is at the center
Includes five planets.
The orbits of the planets are circular,
Heliocentric ModelThe Sun is at the center of the solar system.
The orbits of the planets are elliptical
Includes eight planets.
The solar system
Explanation:
The main difference between the heliocentrical and geocentrical model is that in the first one, the Sun is in the center and the planets are around it, while in the second model, the Earth is in the center and the Sun, the moon, and the planets are around it.
Also, the geocentrical model stated that there were five planets, Mercury, Venus, Mars, Jupiter, and Saturn. These planets had circular orbits. In other words, they have a circular motion around the Earth, and this one was still in the center of the system.
In the heliocentric model, there are eight planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, and they all rotate in elliptical orbits around the Sun. The Heliocentric model is also called the solar system since its central star is the Sun, and the planets are around it.
Which of the following pairs shows the correct monomer, macromolecule, function relationships?
Question 1 options:
triglyceride: carbohydrate: information storage
monosaccharide: protein: quick energy
amino acid: lipid: insulation
nucleotide: nucleic acid: genetic information storage
Answer:
Amino Acid: lipid: Insulation
Explanation:
Monomers are the building blocks of the four basic macromolecules of life- monosaccharides are the monomers of carbohydrates, amino acids are the monomers of proteins, glycerol/fatty acids are the monomers of lipids, and nucleotides are the monomers of DNA.
The group of mammals that includes the possums and wombats of
Australia, along with other pouched mammals, is the Order:
Monotremata
Primata
Carnivora
Marsupialia
Ans this question fast
Answer:
This type of artificial propagation in plants is layering.
Answer:
grafting
Explanation:
grafting is the joining and uniting of part of one plant with a second plant
1) Food Chains connected to the Rat
1
2.
3
None of these answers
Answer:
THe answer is the c because the chemicals become the g and the a so when chem two a is reslopp then u get c. :)
Explanation:
Answer:
need more informaiton
Explanation:
trace the pathway of impulses through the nervous system in response to feeling rain on your skin?
Sensory neuron(s) then transmit information from the sensory receptor(s) to the Central Nervous System
Explanation:
These receptors are located all over the body but some types of receptors are in specific areas of the body (e.g. taste receptors in the mouth).
Sensory neuron(s) then transmit information from the sensory receptor(s) to the Central Nervous System (i.e. the brain and spinal cord, sometimes referred to in the abbreviated form: C.N.S.). This is happens because peripheral nerves all connect to the spinal cord via the network of nerves within the nervous system.
The information so received by the C.N.S. is further transmitted by relay neurone(s) with the C.N.S.
Hope THis Helps x
The Vertebrata have the least number of species in it. True or false
Answer:
False
hope it is helpful to you
What does each person do just before becoming infected?
I would think they would probably hide from the people that are infected.
Which is NOT true of the purpose of the alcohol in Gram staining?
A. It binds the crystal violet into the cell wall.
B. It decolorizes the cells.
C. It dries out the cells.
D. It shrinks the cell wall.
Answer:
the answer to this question is a
The statement which is not true of the purpose of the alcohol in Gram staining is as follows:
It binds the crystal violet into the cell wall.Thus, the correct option is A.
What is Gram staining?Gram staining may be defined as a methodology that is utilized for the classification of bacterial species such as gram-positive and gram-negative.
In gram staining, ethyl alcohol or acetone is used as a decolorizer that dehydrates the peptidoglycan layer. It involves the shrinkage or tightening of the cell wall.
In this process, the large crystal violet-iodine complex is not able to puncture this tightened layer of peptidoglycan.
Therefore, the correct option for this question is A.
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I have the biology STAAR test tomorrow what facts and tips would help me pass it please help
Answer:
eat breakfast+stay posative+read a book 20min before bed+and study things that you things will help you get ready
Explanation: YOU GOT THIS!!!!
Deciduous forests receive 75 cm of rainfall each year, making plant growth plentiful. What type of animals live in these forests?
A. only birds that migrate
B. a limited amount of animals
C. a wide variety of animal life
D. only burrowing animals
5 rules on how a feigned creature inherits traits
Answer:
Inherited traits include things such as hair color, eye color, muscle structure, bone structure, and even features like the shape of a nose. Inheritable traits are traits that get passed down from generation to the next generation. This might include things like passing red hair down in a family.
Explanation:
Heat energy is transferred through solids, liquids, and gases. How is heat transferred throughout the world’s oceans?
Answer: Radiation, convection, and turbulent heat exchange, as well as evaporation and condensation of water vapor above the ground or ocean, transfer heat between the sea or ocean's surface and the atmosphere.
Explanation:
A(n) BLANK
protein is a transport molecule that binds
with a diffusing substance to carry it across a cell membrane.
Answer:
Carrier Protein
A carrier protein is:
- A type of transport protein
- Specifically used for a molecule, ion, or a group of substances.
How the carrier protein works:
It "carries" the ion or molecule across the membrane by changing shape after the binding of the ion or molecule.
according to the passage an advantage of selective breeding is
The advantage of selective breeding is the ability to produce offspring with more desirable traits. Therefore, option A is correct.
What is selective breeding?Choosing parents with specific traits to breed with one another in order to generate kids with more desired traits is known as selective breeding. For thousands of years, humans have carefully bred a variety of animals and plants, including crop species that produce more.
Through artificial selection, several fruits and vegetables have been enhanced or even created. For instance, selective breeding was used to create broccoli, cauliflower, and cabbage from the wild mustard plant.
offspring can be produced with more desirable characteristics by selective breeding. Therefore, option A is correct.
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Which of the following is the best definition of an opinion? Information that cannot be proven true or false. C. Something that b. Information that is incorrect. d. An argument.
Name the described body systems and fill in the missing information. [30 points] :)
Answer:
The skeletal system and the muscular system
Explanation:
our organs and provides fatme to help the body keep its shape .It also stores important substance such as WBCs to give it strength.
Describe the difference between how genetic engineering and artificial selection influence traits.
Answer:
Explanation:
Artificial selection selects the traits that are already present in the animal or human. On the other hand genetic engineering creates new/different traits.
In artificial selection scientist only breed the desirable traits. With genetic engineering use DNA to specifically manipulate the genome. Example: A way to change the genome is to enter genes from another organism.
Hope that helped!
which kingdom has 2 kingdoms that are all unicellular?
Answer: Prokaryotes, archaea, protists, fungi, algae.
Explanation:I don’t think there are any single celled organisms that are today classified as animals. So basically I just left the animal kingdom out. Both metazoans and sponges are for the most part multicellular.
In a certain fish, blue scales and red scales are purebreds. When a fish has the hybrid genotype, it has a patchwork of blue and red
scales. What is the genotype for the blue fish?
Answer:
Explanation:
Bb
An object at rest will ____________________ if no outside forces are applied
A. stay at rest
B. increase velocity
C. decrease mass
Answer:
A. Stay at rest
Explanation:
Since no other forces are applied to the object, there is nothing that can move the object since the forces are balanced.
Answer:
A. stay at rest
Explanation:
This is true because for example if a feather is left alone it will not move but if an outside force such as your hand or the wind applies force on it it will move.
In a school, small noses (S) are dominant to Big noses (b). List the three possible genotypes and phenotypes in the offspring below.
Genotypes: Phenotypes:
Answer:
Sb, SS, bb
Small nose, Small nose, big nose
Explanation:
Why do you think Europeans—and especially the English—are most affected by asthma?
Answer: Asthma is one of the most frequent chronic conditions in Europe, affecting more than 30 million Europeans – a number that is still growing.
"At some stage in the future almost half of the population may suffer from an allergic disease and asthma will be a considerable proportion of this," said Nikolaos Papadopoulos, professor of allergy and pediatric allergy at the University of Athens, in an interview. He added that it is also a global phenomenon.
Asthma is a chronic disease of the airways that makes breathing difficult. An asthma attack inflames and narrows the airways that carry oxygen to the lungs, leading to coughing, wheezing, shortness of breath, and chest tightness. Its prevalence has been linked to industrial development.
Explanation: there you go UwU
A skeleton is found that has a narrow pelvis, large occipital protuberance, and a sloping forehead. Is the skeleton a biological male or female? Justify your answer with an explanation on how you came to your conclusion.
(Forensics)
Answer: Male
Explanation:
The pelvis is narrow in males, the pubis arch is 90 degrees in angle. It is broad in case of females to support pregnancy and child birth. Also the pubis arch is more than 90 degrees in angle. An occipital protuberance is a region that connects the head to the neck and it is generally larger in males than in female. In males the forehead is sloping in the cranium whereas that in females it is vertical and flat.
Hence, the skeleton have the features that can be indicated towards the features of a male.
Mr. Thorn says that Lonnie, a new black student in an all-white school, must
have cheated on the test because Lonnie made the second-highest grade in
the class. At what point does this claim become institutional racism?
A. When the principal says nothing should be done to stop Mr. Thorn
O B. When Mr. Thorn will not let Lonnie say how his feelings were hurt
C. When Lonnie says his feelings are hurt
O D. When the other students in the class start to tease Lonnie
What is found in cytoplasm?
Check all that apply.
Organelles
Cellular adhesion molecules
Cytoskeleton
Cytosol
Cell membrane
Answer:
organelles
cytosol
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Explain the various phase of menstrual cycle with reference to changes in ovary and uterus and hormonal cycle.
Answer:
In the follicular phase, the follicles grow inside the ovary. The ovulatory phase is the time of greatest fertility for women. In it, estrogen levels peak just before the egg is released. In the luteal phase, after ovulation the follicular structure that remains in the ovary reorganizes and becomes a gland known as the corpus luteum. The self-determined life of the corpus luteum causes it to degenerate after 14 days and end a menstrual cycle. At the end of the luteal phase, progesterone and estrogen levels drop and menstruation occurs.
Explanation:
The follicular phase is where follicles develop (fluid-filled cavities in the ovary that contain an undeveloped egg) that will eventually house the egg. For the development of follicles, the body sends a signal to the brain to start the production of follicle stimulating hormone (FSH), the follicles begin to develop and produce estrogen. In the ovulatory phase, the level of estrogen in the body continues to rise, causing a rapid rise in LH. This increase causes the secretion of proteolytic enzymes that will degrade the follicular tissue allowing the maturation process of the ovum and its release to finish, a fact known as "ovulation". Ovulation usually occurs between 24 and 36 hours after the LH surge, so luteinizing hormone is a good factor for measuring the period of maximum fertility and knowing the fertile days of the woman. In the luteal phase, the corpus luteum develops that will last until a possible pregnancy or menstruation occurs, starting the next cycle. The egg, after being released, travels through the fallopian tube to the womb. It can survive up to 24 hours and sperm up to 5 days inside the uterus, therefore the days before ovulation and the day of ovulation itself, which can be calculated with the ovulation calendar, are those of maximum fertility and higher chances of pregnancy. After ovulation, the follicle begins to contract but continues to produce progesterone and begins to produce estrogen in order to continue preparing the uterus to receive the embryo.
Please help me to solve this question.
Answer:
i. Liver
ii. Heart Muscle, involuntary
iii. The cardiac muscle cell has one central nucleus, like smooth muscle, but it also is striated, like skeletal muscle. The cardiac muscle cell is rectangular in shape. The contraction of cardiac muscle is involuntary, strong, and rhythmical.
Explanation: