A survey reveals that 25 percent of a population of 1,000 individuals have attached earlobes (are homozygous recessive for the t
rait). For the following questions, assume that the population fits the parameters of the Hardy-Weinburg law. If p equals the frequency of the dominant allele and q equals the frequency of the recessive allele, which of the following terms represents the frequency of the individuals who show the dominant phenotype?
a. pxp
b. qxq
c. 2pq
d. pxp +2pq
e. pxp + qxq
The formula for genotype frequency for a population in Hardy-Weinburg equilibrium is as under:
p² + 2pq + q² = 1
where, p = dominant allele
q = recessive allele
Here,
p² represents frequency of homozygous dominant genotype
2pq represents frequency of heterozygous genotype
q² represents frequency of homozygous recessive genotype
Also, although the genotypes p² & 2pq are different from each other yet phenotypically they both will collectively produce dominant trait i.e. free ear lobes not attached earlobes. So the term "p² + 2pq or pxp + 2pq" represents the frequency of the individuals who show the dominant phenotype in this particular population. Dominant phenotype will comprise 75% of the population.
The answer is <span> an endothermic reaction. </span>Photosynthesis is a type of endothermic reaction because it needs the energy from light (sun) to convert water and carbon dioxide into oxygen and glucose needed by other organisms.
<em>modulate abiotic forces that, in turn, affect resource use by other organisms. both negative and positive effects on species richness and abundances at small scales, but things that a tree does than directly use the tree for ... changes in biotic or abiotic materials. in comparison to some of the other examples we discuss.</em>
