Which allele combination represents a recessive monohybrid trait?
A) aa
B) Aa
C) AA
D) ab
E) Ab

Question

Quizplus · Accepted Answer

The combination aa represents a recessive monohybrid trait because if an individual carries two copies of the recessive allele (aa), then the dominant allele will not be expressed and the recessive trait will be seen in the individual. Choices B and C represent heterozygotes, which are not recessive. Choices D and E mix both letters and lower and upper cases, which do not represent proper genetic notation.

Which Allele Combination Represents a Recessive Monohybrid Trait