In the Hardy-Weinberg equations, the frequencies of 2 alleles in a population (where there are only 2 alleles to consider) can be designated as
A. p2 and q2.
B. (p + q)2.
C. p and q.
D. 2pq.
E. p2 and 2pq.
Answer: C
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A pea plant heterozygous for the purple-color gene (Aa) is self-pollinated. What color ratios are expected in the offspring?
a. 3 purple: 1 white b. 1 purple: 2 lavender: 1 white c. 1 white: 3 purple d. 1 purple: 1 white
The cells capable of releasing histamines are ____
a. mast cells and basophils b. basophils and eosinophils c. mast cells and eosinophils d. natural killer cells and macrophages e. B and T cells
What key conclusion did Riesch and Schlupp draw from the life history data of the Atlantic mollies?
A. More energy is invested in producing larger offspring when the populations live in environmentally stressful habitats. B. The populations exposed to H2S are able to use the toxic molecule for metabolic energy. C. Genetic regulation in the species results in production of equal sizes of offspring whether exposed to stressful environments or not. D. More energy is invested in producing many more offspring when the populations live in environmentally stressful habitats. E. The populations are only able to survive and reproduce when in stressful environments of either darkness or H2S.
Why is it that there are more immunoglobulin proteins than can be accounted for by the number of V gene segments?
What will be an ideal response?