In some instances, a(n) ______ causes a sudden change and abnormality in the structure of genes.
A) mutation
B) extra chromosome
C) broken chromosome
D) allele

Question

Quizplus · Accepted Answer

A mutation can cause a sudden change and abnormality in the structure of genes. Mutations can be caused by various factors, such as exposure to radiation or chemicals, errors during DNA replication, and other genetic factors. An extra chromosome or broken chromosome can also cause structural abnormalities in genes, but these are not the best choices to fit the description provided in the question. An allele is a variant form of a gene, and although it can contribute to the diversity of genetic traits within a population, it does not necessarily cause sudden structural abnormalities in genes.

In Some Instances, A(n) ______ Causes a Sudden Change and Abnormality