Brothers, Patrick and Michael, do not look very much alike. Patrick has green eyes and blond, curly hair like his mother. Michael has blue eyes and dark brown, straight hair like his father. These directly observable characteristics are
A) phenotypes.
B) genotypes.
C) chromosomes.
D) DNA.

Question

Quizplus · Accepted Answer

Phenotypes refer to an individual's observable physical or biochemical characteristics, such as eye color and hair type. Patrick and Michael's eye color and hair type are directly observable, making them phenotypes. Genotypes refer to an individual's genetic makeup, which includes the specific alleles inherited from their parents. Chromosomes and DNA are both related to genetics, but do not directly refer to observable physical characteristics.

Brothers, Patrick and Michael, Do Not Look Very Much Alike