Genetic Diversity (AQA A-Level Biology): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Genetic diversity meaning
Genetic diversity meaning
Number of different alleles in a species/population
Alleles definition
Alleles definition
Different versions of the same gene
How mutations boost genetic diversity
How mutations boost genetic diversity
Create new alleles randomly in DNA
Gene flow meaning
Gene flow meaning
Migration & interbreeding adds different alleles
Genetic bottleneck
Genetic bottleneck
Dramatic population drop reducing gene pool diversity
Founder effect
Founder effect
Small group starts colony with limited alleles
Natural selection mechanism
Natural selection mechanism
Beneficial traits → survival → more offspring → allele frequency increases
3 types of adaptations
3 types of adaptations
Behavioural, physiological, anatomical
Behavioural adaptations
Behavioural adaptations
Changes in how organisms act for survival
Physiological adaptations
Physiological adaptations
Internal processes enhancing survival