Brandon and Jacob are identical twins. However, Brandon had a finger damaged in an accident, so even if you couldn't tell them apart from a distance, once you saw the finger you knew who was who. This difference is a characteristic of their
A) genotypes.
B) personalities.
C) heterozygous chromosomes.
D) phenotypes.

Question

Quizplus · Accepted Answer

Phenotypes are the observable physical or biochemical characteristics of an organism, which can result from both genetic and environmental factors. In this case, the damaged finger is a visible physical difference between the two twins, making it a phenotype. Genotypes refer to the genetic makeup of an organism, while personalities are behavioral and psychological traits that are not directly related to physical appearance. Heterozygous chromosomes refer to the presence of two different alleles (versions) of a gene on a pair of chromosomes.

Brandon and Jacob Are Identical Twins