Biology Y9/10 Evolution, Speciation and Classification Flashcards
1
Q
what is variation
A
differences in characteristics between individuals within a population/species or between species
2
Q
types of variation
A
- genetic variation
- environmental variation
- combination
3
Q
examples of genetic variation
A
- eye colour
- sex
- blood group
4
Q
examples of environmental variation
A
- accent
- veganism
- scarring
5
Q
examples of combination variation
A
- mass
- skin colour
- flexibility
- fingerprints
6
Q
what is evolution
A
the change in inherited characteristics in a population over time
7
Q
what causes evolution
A
random mutations
8
Q
what did all living things evolve from and when
A
simple life forms more than 3 billion years ago
9
Q
how does natural selection occur
A
