A change in DNA sequence that is present in at least 1% to 2% of the population is called a(n):

Question

Quizplus · Accepted Answer

A polymorphism is a genetic variation that is common in a population, typically present in at least 1% to 2% of individuals. This differs from a mutation, which is a rare genetic change that is not widespread in the population. Therefore, option B is the correct answer. Phenotype refers to the observable characteristics of an individual resulting from their genotype and environmental factors. Aneuploidy refers to an abnormal number of chromosomes in a cell, which may result from errors during cell division. Therefore, options A, C, and D are incorrect.

A Change in DNA Sequence That Is Present in at Least