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Gene expression in physical characteristics such as eye or hair color is referred to as ____.

A phenotype
Explaination
Phenotype is defined as the expression of one's genes in physical characteristics. Genotype is one's genetic make-up. An allele is a heredity factor, and a homozygous allele is when two alleles are alike for a particular gene.
B genotype
C allele
D homozygous allele