Variations in a trait based upon spontaneous changes in a gene are called
A) mutations.
B) chromosomes.
C) natural selection.
D) survival of the fittest.

Question

Quizplus · Accepted Answer

Mutations are spontaneous changes or variations that can occur in a gene resulting in changes in the trait. Chromosomes are structures that contain DNA and genes, but they do not cause variations in traits. Natural selection and survival of the fittest refer to the process by which certain traits become more or less common in a population over time based on their ability to help individuals survive and reproduce, but these processes do not directly cause the variations in traits.

Variations in a Trait Based Upon Spontaneous Changes in a Gene