M6: Population Genetics - Gene flow and Genetic Drift Flashcards
(5 cards)
1
Q
What are the mechanisms for evolution?
A
- mutation
- gene flow
- genetic drift
- natural selection
2
Q
What is gene flow?
A
New individuals with different genes enter a population and spread their alleles amongst the existing population. results from immigration and immigration of small groups
3
Q
What is genetic drift?
A
changes in allele frequency due to random chance events
4
Q
What is the founder effect?
A
new population established by a small number of individuals from a larger population which leads to loss in genetic variation
5
Q
What is the bottle neck effect?
A
significant reduction in a population size leading to decrease in genetic diversity
