Question

How do beneficial mutations in DNA contribute to evolutionary change in populations over time?
Question 14 options:

Beneficial mutations immediately spread to all individuals in the population

Beneficial mutations only occur when environmental conditions become challenging

Beneficial mutations increase survival, become more common through natural selection

Beneficial mutations are passed directly from parents to offspring without variation

Answer 1

"Beneficial mutations increase survival, become more common through natural selection."

Explanation: Mutations arise randomly; if a mutation improves an organism's fitness, individuals carrying it tend to leave more offspring. Over generations the advantageous allele increases in frequency in the population via natural selection.