An allele of the pea color gene specifies the enzyme Sgr, which normally functions in a pathway to break down chlorophyll during pea maturation, resulting in yellow mature peas.A second allele of the Sgr gene produces no enzyme and is the ________ allele.
A)dominant
B)recessive
C)wild-type
D)functioning

Question

Quizplus · Accepted Answer

The allele that produces no enzyme and results in a deviation from the normal function (in this case, the breakdown of chlorophyll) is typically considered the recessive allele. Dominant alleles are those whose traits are expressed when present, while recessive alleles require two copies for their traits to be expressed.

An Allele of the Pea Color Gene Specifies the Enzyme