Population

Question 1

Define species

Answer 1

Group of organisms that can interbreed to produce fertile offspring

Question 2

Define population

Answer 2

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

Question 3

Define gene pool

Answer 3

Range of different alleles existing for a particular locus within a population

Question 4

Define allele frequency

Answer 4

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

Assumptions made by 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 next generation
• Random mating
• Large population

Question 7

Explain Hardy-Weinberg equation for calculating allele frequency

Answer 7

Frequencies of each allele for a characteristic must add up to 1.0
Equation is p + q = 1
p= frequency of dominant allele
q= frequency of recessive allele

Question 8

Explain Hardy-Weinberg equation for calculating genotype frequency

Answer 8

Frequencies of each genotype for a characteristics must add up to 1.0
Equation is p2 + 2pq + q2 = 1
p2= frequency of homozygous dominant
2pq= frequency of heterozygous
q2= frequency of homozygous recessive