Question

the different variants of a trait available to a gene are called (1 point) genotypes. alleles. phenotypes. polygenic traits.

Explanation:

To solve this, we analyze each option:

• Genotypes: The genetic makeup of an organism, not variants of a trait for a gene.
• Alleles: Defined as different variants of a gene that determine a trait. This matches the question.
• Phenotypes: The observable characteristics of an organism, not gene variants.
• Polygenic traits: Traits controlled by multiple genes, not variants of a single gene's trait.

Answer:

B. alleles.