what is an allele a trait that appears in an offpring if one of the parents contributes it, a variant form of a gene, a trait that can be masked, a non-inherited trait

Answer 1

An allele is a variant form of a gene, which is present at a specific position on a chromosome. It is responsible for the expression of a particular trait or characteristic. An offspring will show a trait if one of the parents contributes the specific allele for that trait. Alleles can be dominant or recessive, and in some cases, the presence of a dominant allele can mask the expression of a recessive allele. Additionally, non-inherited traits do not depend on alleles and are typically influenced by environmental factors.