Question

Genotype and phenotype are determined by the alleles an organism inherits. Which of the following represents a genotype?

A.
Aa

B.
red hair

C.
height

D.
gamete


Answers

GPT-4o mini
The correct answer is:

**A. Aa**

A genotype refers to the genetic makeup of an organism, specifically the alleles it possesses for a particular trait. "Aa" represents a genotype, where "A" and "a" are different alleles for a gene.

The other options represent phenotypes or concepts related to genetics, but not genotypes. For example, "red hair" and "height" are physical traits (phenotypes), and "gamete" refers to the reproductive cells that carry alleles, not the genotype itself.

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