12.1 Study Guide Flashcards
(6 cards)
1
Q
Natural selection
A
Traits that improve survival or reproduction accumulate in the population
2
Q
Frequency of traits change in a population due to chance events
A
Genetic drift
3
Q
Amount of fertile offspring an organism has
A
Fitness
4
Q
Genetic variation that increases fitness
A
Adaptation
5
Q
Founder’s effect
A
Small initial population
6
Q
Bottleneck effect
A
Population wiped out
