genetic diversity
- Created by: Ellie Rivers
- Created on: 15-03-13 16:31
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- Genetic Diversity
- Selective Breeding
- also know as ARTIFICIAL SELECTION
- help to parent the next generation
- unwanted characteristics are bred out of the population
- identifying individuals with specific characteristics
- over many generations the population will all possess the desired qualities
- but they will have reduced genetic diversity
- The Founder Effect
- a few individuals of a species colonise a new region
- these individuals carry with them a small fraction of alleles from the population
- the new population develops but with less genetic diversity
- they have fewer alleles so are less able to adapt to changing conditions
- the new population may become a entirely new species over the generations
- Genetic Bottlenecks
- when populations suffer a dramatic drop due to an event
- for example natural disaster or human interference
- the survivors possess a smaller amount of alleles
- the few left re establish but the genetic diversity remains restricted
- when populations suffer a dramatic drop due to an event
- Selective Breeding
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