Sickle cell anemia is caused by a single letter mutation so transcription will lead to synthesis of a different <u><em>mRNA</em></u> molecule . The different mRNA molecule will lead to a different <em><u>protein</u></em> where a single amio acid is different(there is valine instead of glutamic acid)
Answer:
F (pp) = 0.04
F (Pp) = 0.32
F (PP) = 0.64
Explanation:
Studying population genetics, we used the Hardy-Weinberg equilibrium model. In the case of snails, the H-W principle predicts that the total number of cases in the population should follow the following equation: PP + 2.Pp + pp = 200.
If a population has 200 snails and 8 are affected by a recessive condition, we have 4% affected, or 0.04.
This means that 0.04 corresponds to p², and p corresponds to 0.2.
Therefore, P is equal to 0.8 because p + P = 1.
Knowing the allele frequencies, we go to the frequency of the genotypes.
F (pp) = p² = 0.04 = 8 snails
F (Pp) = 2.Pp = 0.32 = 64 snails
F (PP) = P² = 0.64 = 128 snails
Answer:
The first stage is the Interface.
Explanation:
There are primarily two main stages in a cell cycle; but the first stage is the interface. This is a stage in which a cell grows and also replicates its DNA.
It can be said to be the longest phase of the cell cycle. During this phase the cell growth reaches its maximum size, replicates its DNA, prepares for cell division, and also performs it very cellular functions.
This stage has three parts which include: G1, G2 and S phases.
Some cells do not need to divide to exit the cell cycle. These cells can exit the cell cycle permanently. Example is a neurons, they may also exit the cell cycle temporarily. These cells are said to be in G0 which is not a stage of the cell cycle.