Biology 30 - Hardy weinburg

Question 1

Population

Answer 1

• Group of organisms of the same species, living in the same place at the same time

Question 2

Gene

Answer 2

• DNA sequences carried on chromosomes that code for proteins/control the inheritance of traits
• e.g.. the gene for squirrel fur colour

Question 3

Allele

Answer 3

• Alternate form of a gene
• e.g.. B = Brown fur b = white fur

Question 4

Gene pool

Answer 4

• Sum of all the alleles in a population
• More variety in a population’s gene pool = survive better in that environment

Question 5

What are the 5 concepts that apply to Hardy Weinberg’s equilibrium?

Answer 5

1. A large breeding population
2. Random mating
3. No change in allele frequency due to mutations
4. No immigration or emigration
5. No natural selection

Question 6

Causes of gene pool change

Answer 6

1. Mutations
2. Gene flow (Immigration and emigration)
3. Non-random mating
4. Genetic drift (Change in allelic frequencies)
5. Natural selection

Question 7

Founder affect

Answer 7

Never an established population prior, few individuals end up in an area and are founders of the future population

Question 8

Bottleneck effect

Answer 8

The population is already established, the majority are wiped out, and those few surviving individuals establish future generations