Lecture 21B Flashcards
1
Q
allele frequency
A
% or proportion if a specific allele of a gene in a population of organisms
2
Q
if there are 20 individuals in a population how many alleles do you have
A
40
3
Q
genetic drift
A
changes in allele frequencies due to random sampling
4
Q
genetic drift can lead to
A
one allele remaining in the population, or the loss of an allele
5
Q
genetic drift in smaller populations tend to
A
fixate(stabilize)
6
Q
when a population size is larger than fixation takes
A
longer to occur
7
Q
founder effect
A
when a large population goes off to establish a new population
8
Q
when does gene flow occur
A
when you have migration followed by interbreeding
9
Q
gene flow can increase or decrease genetic..
A
variation!
10
Q
gene flow allows connected populations to have
A
more similar allele frequencies
