The figure below shows three mouse populations and their associated changes in the frequency of B, the allele for dark fur. The recessive b allele codes for white fur. After 20 generations, in which population would you be most likely to encounter a white mouse?
A. N1
B. N2
C. N3
D. There is an equal probability of encountering a white mouse in all three populations.
E. There is an equal probability of encountering a white mouse in populations N1 and N3 and this is higher than in N2.
C. N3
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a. primary spermatocytes b. secondary spermatocytes c. spermatids d. mature sperm e. a zygote
The input zone of a neuron involves the:
a. axon only b. axonal terminals only c. cell body only d. dendrites only e. cell body and its dendrites, but not the axon or its terminals
Four of the five events listed below occur after
fertilization. Select the exception. a. cleavage b. gametogenesis c. blastula formation d. gastrulation e. organogenesis
A human X-linked recessive gene may be
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