3.7.2 Populations

Question 1

Define species

Answer 1

A group of organisms that can interbreed to produce fertile offspring

Question 2

Define population

Answer 2

All the organisms of a particular species that live in the same place

Question 3

Define gene pool

Answer 3

The range of different alleles existing for a particular locus within a popluation

Question 4

Define allele frequency

Answer 4

The proportion of a certain allele within a gene pool, expressed as a decimal or percentage

Question 5

What is the hardy weinberg principle

Answer 5

Allows us to estimate the frequency of alleles in a population, as well as if allele frequency is changing over time

Question 6

Give the assumptions made by the hardy weinberg principle

Answer 6

No mutations occur to create new alleles
No migration in or out of the population
No selection, so alleles are all equally passed on to the next generation
Random mating
Large population

Question 7

Basic hardy weinberg equation

Answer 7

p+q=1
p = frequency of dominant allele
q= frequency of recessive allele

Question 8

Longer hardy weinberg equation

Answer 8

p^2 + 2pq + q^2 = 1
p^2 = frequency of homozygous dominant
q^2 = frequency of homozygous recessive
2pq = frequency of heterozygous