In genetic crosses, the symbol Aa refers to a:
A)genotype.
B)phenotype.
C)morphotype.
D)holotype.
E)archetype.

Question

Quizplus · Accepted Answer

The symbol Aa refers to a genotype, which represents the genetic makeup of an organism. The symbol A represents one allele of a gene, and a lowercase a represents another allele of the same gene. Therefore, Aa indicates that an organism has two different alleles for a specific gene.

In Genetic Crosses, the Symbol Aa Refers to A