Albinism Is a Recessive Trait Where an Individual Does Not

question 50

Multiple Choice

Albinism is a recessive trait where an individual does not produce the pigment melanin. A man and woman who both produce melanin have one child out of three who has albinism. What are the genotypes of the man and woman?

• A) One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous.
• B) One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous.
• C) Both parents must be heterozygous.
• D) One parent must be homozygous dominant; the other parent must be heterozygous.

---

Definitions:

Methanogens

Microbes that generate methane during their metabolism in environments lacking oxygen.

Vector

An organism, often an insect, that transmits a disease or parasite from one animal or plant to another.

Pathogen

Disease-causing agent (virus or cellular organism).

Pathogen

Any microorganism that can cause disease in its host, including viruses, bacteria, fungi, and parasites.