Zygotic selection against dominant alleles is more efficient than selection against recessive alleles. It can take fewer than 100 generations to eliminate a dominate delterious allele with an initial frequency of 0.70.
According to hardy- Weinberg equilibrium scientist have observe at-least two generation. Allele frequencies are the same for both generations then the population is in the Hardy- Weinberg equilibrium. The frequency of heterogeneous individuals are equal to 2pq.
In case of 2pq equals 0.32 which means that the frequency of individuals heterozygous for this gene is equal to the 32%. Hardy- Weinberg equation is , p=the frequency of dominant allele in a population.q= frequency of recessive allele in a population.
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Answer:
Explanation:
Egg and sperm join together and the resulting fertilized egg contains all the information needed to grow into a new individual.
Answer:
Skin serves as a protective barrier, a way to sense the world, and a layer that keeps nutrients and water inside the body. Four types of cells make up the skin, and they are produced mainly in the epidermis near the basement membrane. Keratinocytes contain structural keratin and make up the bulk of the epidermis.
A. It acknowledges the correct amount of decimal points and could be a reasonable measurement.
B is incorrect because we don’t have measurements down to the hundredth place on the ruler.
C is incorrect because it doesn’t acknowledge the amount of decimal places available, only stating it as a whole number.
D is incorrect for the same reason as C.
In cell signalling, after a signal is sent, signal molecules bind to receptors on target cells and some activity in a target cell changes.
There are three stages in cell signalling :
1. The process of reception occurs when a signalling molecule from the extracellular environment is recognized by a cell. The chemical signal, which is also known as a ligand, is recognized as a signal when it attaches to a receptor protein either on the exterior of the cell or on the interior of the cell.
2. Transduction: This process occurs when the signalling molecule interacts with the receptor, which causes a change in the protein that makes up the receptor. The process of transduction is kicked off by this modification. In most cases, signal transduction occurs through a pathway that consists of numerous stages. The signal transduction route contains relay molecules, each of which influences the subsequent molecule in the pathway.
3. Reaction: In the third and last step, the signal causes a certain cellular response.
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