Question

what is an allele? (1 point)
a non - inherited trait
a variant form of a gene
a trait that appears in an offspring if one of the parents contributes it
a trait that can be masked

Explanation:

An allele is a variant form of a gene. Genes are segments of DNA that code for a specific trait, and alleles are different versions of the same gene. For example, for the gene that determines eye - color, there are different alleles for blue, brown, etc.

Answer:

B. a variant form of a gene