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17 In snapdragons, R represents red flowers, and r represent white flowers. In the
cross RR x rr, all the offspring have pink flowers. Which pattern of inheritance is
illustrated by this cross?
A Incomplete dominance
B Multiple alleles
C Recessiveness
D Polygenic inheritance

Respuesta :

This would be a case of incomplete dominance of a trait—here, the color of the flowers. Incomplete dominance results in the expression of multiply dominant alleles such that the resulting phenotype is a blend of the individual alleles. Pink flowers are the result of the alleles for red and white flowers being expressed as a mixture. Thus, A would be the correct answer.

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