Populations

Question 1

What is a species?

Answer 1

A group of similar organisms that can interbreed and produce fertile offspring.

Question 2

What is a population?

Answer 2

A group of organisms of the same species living in a particular area at a particular time.

Question 3

What is a gene pool?

Answer 3

The complete range of alleles in a population.

Question 4

What is the Hardy-Weinberg Principle?

Answer 4

A mathematical method that proves that the frequency of alleles in a population won’t change from one generation to the next.

Question 5

What conditions are needed for the Hardy-Weinberg Principle to work?

Answer 5

1. A large population with no immigration, immigration, mutations and natural selection.
2. Random mating

Question 6

What is the allele frequency equation?

Answer 6

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

Question 7

What is the genotype frequency equation?

Answer 7

p2 + 2pq + q2 =1
when p is the dominant allele and q is the recessive allele. p2 = Homozygous dominant
q2 = Homozygous recessive
2pq= Heterozygous

Question 8

When can this not be used?

Answer 8

1. The organisms are more likely to die before reproducing.
2. The organisms aren’t able to grow sufficiently to reproduce successfully.
3. Organisms aren’t able to attract a mate.