Question

question 50
a carrier of a genetic disorder who does not show symptoms is most likely to be

1. dominant for the trait
2. heterozygous for the trait
3. homozygous for the trait
4. hemizygous for the trait

Explanation:

A carrier of a genetic disorder who does not show symptoms has one normal allele and one recessive allele for the disorder. In genetics, an individual with two different alleles (one dominant - normal and one recessive - disorder) is heterozygous. If it were homozygous for the recessive trait, the individual would show symptoms. If it were dominant for the trait (homozygous or heterozygous with the disorder allele being dominant), the individual would show symptoms. Hemizygous is mainly used in the context of sex - linked genes (e.g., males with one X - linked gene), which is not relevant here in the general sense of a carrier.

Answer:

1. heterozygous for the trait