Differences in the same gene, such as the gene for human blood type, are called , and they are a primary sourc

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Differences in the same gene, such as the gene for human blood type, are called , and they are a primary source of observable trait variation in a population.

GPT-5 mini · Answer

Alleles.

Different alleles are alternative versions of the same gene (e.g., the A, B, and O alleles of the human ABO blood‑type gene) and are a major source of phenotypic variation in populations.

Differences in the same gene, such as the gene for human blood type, are called , and they are a primary source of observable trait variation in a population.

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