Imagine a population of rabbits in which most of the rabbits are brown all year. Then a mutation occurs, and one rabbit is born with a coat that turns nearly white in the winter. How might this white coat present an advantage to the rabbit? A. The white coat would help the rabbit hide from predators when snow fell during the winter. B. The white coat would help the rabbit stand out against the greens and browns of summer foliage. C. The white coat would help the rabbit attract a mate more easily than a brown coat. D. The white coat would help the rabbit stay warmer than a brown coat
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In rabbits, the dominant allele $C$ is required for colored fur; the recessive allele $c$ makes the fur colorless (albino). In the presence of at least one $C$ allele, another gene determines whether the fur is black $(B, \text { dominant) or brown ( } b$, recessive). A homozygous strain of brown rabbits was crossed with a homozygous strain of albinos. The $F_{1}$ were then crossed to homozygous double recessive rabbits, yielding the following results: black 34 ; brown $66 ;$ albino 100 . Are the genes $b$ and $c$ linked? What is the frequency of recombination? Diagram the crosses, showing the arrangement of the genetic markers on the chromosomes.
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