★ Inheritance Quiz
In dogs, the allele for black fur (B) is dominant over the allele for white fur (b). A breeder breeds a heterozygous dog with a recessive homozygous dog. If the female dog has a litter of 12 puppies, predict how many will have black fur.
A. 12
B. 3
C. 6
D. 4
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Sex-linked genes are mostly found on which chromosome?
A. XX
B. XY
C. Y only
D. X only
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