Question

Eyelash length. In eyelash length, long eyelashes (L) are dominant over short eyelashes (l). A person has long eyelashes but also carries a gene for short eyelashes.

Is this person homozygous or heterozygous for this trait?

Answer 1

Heterozygous because one who has a heterozygous gene is referring to one who has two different alleles in 1 gene. Homozygous refers to one who has two alleles who’s characteristics are exactly the same forming a similar but different gene compared to homozygous.