Mutations Flashcards

All 4 cards in this deck

What is a mutation?

A random change in the base sequence of DNA. A mutation within a gene can produce a new allele.

What is the original source of the extensive genetic variation within a population of a species?

Mutations. There is usually extensive genetic variation within a population.

What effect do most mutations have on the phenotype?

No effect at all; some have a small effect.

True or false? A single mutation can sometimes significantly affect the phenotype.

True, but this is rare.