Population Genetics

Question 1

Species

Answer 1

Groups of organisms that can bread together to produce fertile offspring

Question 2

Gene pool

Answer 2

All alleles of all genes in population

Question 3

Allele frequency

Answer 3

Number of times alleles appears in gene pool

Question 4

What is the H-W principle

Answer 4

Calculate frequencies of different alleles of a gene in a population
- assume frequencies of alleles in a population remain constant between generations

Question 5

Assumptions of the H-W principle

Answer 5

• no selection - alleles all equal
• no mutation - no new alleles
• no migration - alleles not removed or changed
• large population - no genetic bottlenecking
• random mating

Question 6

Allele equations (frequency of dominant =? Frequency of recessive = ?)

Answer 6

Dom = p
Rec = q

2 alleles = p+q=1

Question 7

Genotype equation
- dominant homozygous = ?
- recessive homozygous = ?
- heterozygous = ?

Answer 7

• DH = p2
• rh = q2
• H = 2pq

P2 + 2pq + q2 = 1