Quantitative genetics Flashcards
1
Q
What is meant by quantitative genetics?
A
Traits we measure
Phenotypes that vary continuously
2
Q
Which 2 factors affect the phenotype?
A
Genotype and the environment
3
Q
When using the Hardy-Weinberg equation what must the population have?
A
- Large random mating population
- No selection
- No mutation
- No migration
- Gene and genotype frequencies are constant
4
Q
What is the hardy-weinberg equation?
A
p2 + 2pq + q2 = 1
5
Q
What are 4 sources of genetic variation?
A
- differences in gene frequencies
- segregation of genes
- recombination
- mutation
6
Q
Give a definition of heritability
A
The additive genetic variation of a trait expressed as a proportion of the total phenotypic ratio
- The higher the heritability estimate the higher the contribution of genetics in the phenotype
