17.1 - 17.2 Flashcards Preview

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Flashcards in 17.1 - 17.2 Deck (13):
1

Gene pool

Consists of all the genes including all the different alleles for each gene

2

Allele frequency

Number of times allele shows up in a gene pool

3

Single gene trait

Presence or absence of dark bands

4

Polygenic traits

2 or more genes controlling

5

Directional selection

Individuals at end of curve have higher fitness than in middle or other end

6

Stabilizing selection

Center curve higher fitness than other sides

7

Disruptive selection

Outer fitness higher fitness than ends

8

Genetic drift

Random change in allele frequency

9

Bottleneck effect

Change in all frequency following a dramatic reduction in size of pop

10

Founder effect

Allele frequency changes based on migration of small subgroup

11

Genetic equilibrium

Allele frequency doesn’t change

12

Hardy-Weinberg principle

Allele frequencies remain constant unless factors make it change

13

Sexual selection

Genes for traits selected aren’t equilibrium