7.2 Populations

Question 1

What is a gene pool?

Answer 1

all the different versions of genes (alleles) in the individuals that make up the population

Question 2

What is the allele frequency?

Answer 2

the number of times an allele appears within a population’s gene pool

Question 3

What does the Hardy-Weinberg principle predict?

Answer 3

the population allele frequencies

Question 4

What are the 5 assumptions of the Hardy-Weinberg principle?

Answer 4

1. population is large
2. random mating in the population
3. population isn’t experiencing any kind of selection
4. the pop has no mutations in DNA
5. pop is completely isolated

Question 5

What does is mean in terms of alleles that the pop is not experiencing any selection?

Answer 5

all the alleles are equally likely to be passed onto the next generation

Question 6

What does it mean in terms of alles that a pop is completely isolated?

Answer 6

there is no flow of alleles into or out of the pop

Question 7

What is the Hardy-Weinberg principle?

Answer 7

a mathematical equation that can be usd to calculate the pop’s allele frequency

Question 8

Why are heterozygotes a resiviour of variation?

Answer 8

they contain both recessive and dominant alleles

Question 9

What is the H-Wb equation for allele frequency?

Answer 9

p + q = 1

Question 10

What does p represent in the H-Wb equations?

Answer 10

dominant allele frequency

Question 11

What does q represent in the H-Wb equations?

Answer 11

recessive allele frequency

Question 12

What is the H-Wb equation for genotype frequency?

Answer 12

p^2 + 2pq + q^2 = 1

Question 13

What does p^2 represent in the H-Wb equations?

Answer 13

homozygous dominant

Question 14

What does 2pq represent in the H-Wb equations?

Answer 14

heterozygous

Question 15

What does q^2 represent in the H-Wb equations?

Answer 15

homozygous recessive