5.2 Natural selection Flashcards
1
Q
Natural selection
A
2
Q
Selective pressure
A
3
Q
Variation between a species
A
4
Q
Causes of variation (3)
A
- DNA replication (random mutation)
- Meiosis (crossover prophase I, random assortment of chromosomes)
- Random fertilization (any gamete to any gamete)
5
Q
Struggle for survival factors (5)
A
- Competition for food
- Predation
- Competition for mates
- Competition for space
- Environmental changes
6
Q
Evolution of antibiotic resistance in bacteria
A
7
Q
‘Advantageous mutations are selected,’ explain why this is important
A
Populations tend to produce more offsprings than the environment can support; the better adopted tent to survive more and pass on favourable traits
8
Q
Evolution of Darwin’s Galapagos Finches
A
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