Populations

Question 1

What is a population?

Answer 1

A group of organisms of the same species in one area at one time that can interbreed

Question 2

What is a gene pool

Answer 2

All the alleles of all the genes in a population at any one time

Question 3

What is allele frequency?

Answer 3

Proportion of an allele of a gene in a gene pool

Question 4

What does the Hardy-Weinberg principle state and what are the conditions
under which the principle applies?

Answer 4

● Allele frequencies will not change from generation to generation, given:
○ Population is large
○ No immigration / emigration (to introduce / remove alleles)
○ No mutations (to create new alleles)
○ Mating is random

Question 5

What is the Hardy-Weinberg equation?

Answer 5

P2 + 2pq + q2=1 - represents genotype
P +q=1 - represent allele

● p = frequency of one (usually dominant) allele of the gene
● q = frequency of the other (usually recessive) allele of the gene
● p2 = frequency of homozygous (usually dominant) genotype
● 2pq = frequency of heterozygous genotype
● q2 = frequency of homozygous (usually recessive) genotype