3.7.2 Populations

Question 1

what is a population

Answer 1

a group of organisms of the same species in a particular space at a particular time
that can potentially interbreed to produce fertile offspring

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 for it to apply

Answer 4

allele frequencies will not change from generation to generation, given that :
-population is large
-no immigration?emigration to introduce or remove alleles
-no mutations to create new alleles
-no selection for or against particular alleles
-mating is random

Question 5

the two equations and what they represent

Answer 5

p^2 + 2pq +q^2 = 1
p^2 frequency of homozygous genotype of one allele
p frequency of on allele of the gene
2pq frequency of heterozygous genotype