Chapter 9 - Genetic Diversity

Question 0

The founder effect

Answer 0

Occurs when a few new individuals from a population colonise a new region

The few individuals will carry only a few number of allele’s compared to the rest of the population

The population that develops from the small colonisation will not have a large genetic diversity

Question 1

Selective breeding

Answer 1

Also known as artificial selection

Selecting individuals with desired characteristics and using them to parent the next generation

Selective breeding is often carried out to produce high yield breeds

Question 2

Genetic bottleneck

Answer 2

When a population or species have a rapid drop in numbers

The group of survivors will possess a much smaller genetic diversity

As these individuals rebuild the population the rebuilt population’s genetic diversity is also very restricted