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Question:

_______ individuals have two identical alleles, such as AA or aa.

A Homozygous
Explaination

Homozygous individuals have two identical alleles, such as AA or aa. Heterozygous individuals have two different alleles, such as Aa. Dominant alleles (A) are usually detectable in an individual, and recessive alleles (a) are usually masked by the dominant alleles.