Use the following information to answer the following questions In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the β hemoglobin alleles in the human gene pool. 15. If the sickle-cell allele is recessive, what proportion of the population should be susceptible to sicle-cell anemia under typical conditions? A. 0.04 B. 0.16 C. 0.20 D. 0.32 E. 0.80

A. 0.04

Explanation:

The recessive sickle cell allele comprises 20% of the beta hemoglobin alleles in the African gene pool. Under equilibrium, Hardy-Weinberg's principle states that

p^2 + 2pq + q^2 = 1

Here q is a recessive allele. We know 20/100 is the proportion of q i.e. 0.2

Now since sickle cell allele is recessive only the people having homozygous condition i.e. two sickle cell alleles will be affected by anemia.

Hence q^2 will be the proportion of the population susceptible to anemia.

We know q = 0.2

Hence q^2 = 0.04.

0.04

Explanation:

Using Hardy-Weinberg Equilibrium equation

p² + 2pq + q²

where p² represent the frequency of the homozygous dominant hemoglobin, 2pq  represent frequency of  heterozygous carrier of the sickle cell and  q² represent frequency of the population susceptible to sickle cell anemia

q = 0.2

the q² = 0.2² = 0.04

interphase   is the cell cycle stage in which the cell acquires nutrients, creates and uses proteins and other molecules and starts the process of cell division by replicating the dna. it is the longest stage in the eukaryote cell cycle.

the following   can go wrong during interphase:   a base pair could be mismatched during the duplication process causing a mutation.   correct answer: c

explanation:

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus