Most chromosomal defects result from
A) mistakes during meiosis.
B) germline mutations.
C) mistakes during mitosis.
D) somatic mutations.

Question

Quizplus · Accepted Answer

Chromosomal defects most commonly result from mistakes during meiosis. This can include chromosomal nondisjunction (when chromosomes fail to separate properly during meiosis), deletion or duplication of genetic material, or rearrangements of chromosomes. Germline mutations (mutations that occur in the DNA of reproductive cells) can also cause chromosomal defects, but these are less common than defects resulting from meiotic errors. Mistakes during mitosis and somatic mutations are less likely to cause chromosomal defects than errors during meiosis or germline mutations.

Most Chromosomal Defects Result from