Unit 4 Flashcards
1
Q
What are the five mechanisms of evolution
A
Mutation Genetic drift Migration Non-random mating Natural selection
2
Q
Gene flow
A
Movement of alleles between populations when individuals migrate and meet
3
Q
Two aspects of genetic drift are
A
Founder effect
Bottleneck effect
4
Q
What is founder effect
A
A new population is founded from a few individuals -like an island religious isolate the Amish
5
Q
What is the bottleneck effect
A
A large population reduced drastically,
From These surviving individuals eventually bring population back
6
Q
Admixture
A
The introduction of gene variants into a population migration can lead to this
7
Q
Cline
A
An allele frequency that changes from one geographical area to a neighboring one
8
Q
Genetic load
A
The collection of the deleterious recessive alleles in a population
