evolution Flashcards
1
Q
define evolution
A
change over time in one or more inherited traits found in a population of organisms
2
Q
what are the 5 mechanisms of evolution
A
- natural selection
- gene flow
- genetic drift
- mutations
- non-random mating
3
Q
define mechanisms of evolution
A
Modes by which a gene pool changes its allele frequency
4
Q
define natural selection
A
The process by which a species becomes better adapted to its environment
5
Q
define gene flow
A
Movement of alleles into or out of a population
6
Q
define genetic drift
A
The change in allele frequencies as a result of a chance process
7
Q
define mutations
A
permanent structural alteration in DNA sequence
