Biology A-Level
genetic bottleneck
What genetic bottleneck means in Biology A-Level, as defined for AQA.
Definition of genetic bottleneck
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Reference: AQA
A situation in which a population crashes and the survivors carry only part of the original variety.
Topics that use genetic bottleneck
- Evolution may lead to speciation (A-level only) (AQA A-Level)
Related terms
- allele frequency change
- allopatric speciation
- causes of change
- common ancestry
- competition for resources
- continuous variation
- crossing over
- directional selection
Using genetic bottleneck in the exam
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