3.7.2 Populations

Question 1

What is a population?

Answer 1

group of organisms of the same species that occupy a particular place at a particular time

Question 2

What is a gene pool?

Answer 2

all the alleles of all the genes of all the individuals of a population at a given time

Question 3

What is allelic frequency?

Answer 3

the number of times an allele occurs within the gene pool

Question 4

What is the purpose of the Hardy-Weinburg principle?

Answer 4

mathematical equation to calculate the frequencies of the alleles of a particular gene in a population

Question 5

What assumption does the Hardy-Weinburg principle make?

Answer 5

proportion of dominant and recessive alleles of any gene in a population remains the same from one generation to the next

Question 6

What 5 conditions are required in order for Hardy-Weinburg assumption to be made?

Answer 6

-no mutations occur co create new alleles
-the population is isolated; no movement of alleles into/ out of population
-no selection (all alleles are equally as likely to be passed to next generation)
-population is large
-mating within population is random

Question 7

What is the equation involving p and q?
(p = dominant allele
q= recessive allele)

Answer 7

p + q = 1

Question 8

What is the equation linking together p², 2pq, q²?

Answer 8

p² + 2pq + q² = 1