selection pressures
What selection pressures means in Biology A-Level, as defined for AQA, OCR.
Definitions of selection pressures
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Reference: AQA
When a new selection pressure arises, such as a novel disease, differences in survival and reproductive success mean advantageous alleles are passed on.
Predation, disease or competition act on the population and affect which individuals are more likely to survive and reproduce.
Topics that use selection pressures
- Genetic diversity and adaptation (AQA A-Level)
- Classification and evolution (OCR A-Level)
Related terms
- advantage depends on environment
- allele
- allele passed to offspring
- altered tertiary structure
- Antibiotic resistance
- aseptic technique
- bacterial lawn
- Binomial nomenclature
Using selection pressures in the exam
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