The offspring of two heterozygous gray-bodied, normal-winged flies should be 50% gray-bodied/normal wings
(BbRr) and 50% black-bodied/vestigial wings (bbrr) because these alleles are linked. Suppose a small number, say 15%,
of the offspring are instead black-bodied with normal wings. This is most likely the result of:
a. crossing-over.
b. incomplete dominance.
c. codominance.
d. an error in meiosis.
e. mutation
a
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