genetic diversity Flashcards
1
Q
what is genetic diversity?
A
the number of different alleles and genes in a population
2
Q
what can genetic diversity be increased by?
A
mutations in the DNA, meiosis, migration of species into a population
3
Q
what can genetic diversity be decreased by?
A
genetic bottlenecks, the founder effect, selective breeding
4
Q
what is a gene pool?
A
the collection of all genes and alleles in a population at a particular time
5
Q
why does genetic variation exist?
A
the presence of different alleles
6
Q
apart from mutation, explain one other way genetic variation within a species is increased
A
random fusion of gametes or crossing over which produces new allele combinations
