Genetic Drift Flashcards
Tokyo Drift
1
Q
Genetic Drift
A
- Genetic drift is the change in frequency of alleles in the population due to random chance.
- Genetic drift can cause:
- a reduction in genetic variation
2
Q
Founder’s Effect
A
Founder’s Effect occurs when a new colony is started by a few members of the original population.
This small population size means that the colony will have less genetic variation
3
Q
Bottleneck Effect
A
- Bottleneck occurs when a population is greatly reduced in size, limiting the genetic diversity of the species.
- Causes: natural disasters, human activities
4
Q
What do natural selection and genetic drift have in common?
A
What do selection and drift have in common? Both lead to evolution (can cause changed to the frequency of alleles)
5
Q
How do they differ: Natural Selection and Genetic Drift
A
How do they differ: Natural selection isn’t random, the alleles for advantageous traits will increase in frequency whereas genetic drift is random and the alleles that increase in frequency could be harmful.
