Natural Selection

Question 1

Intraspecific Variation

Answer 1

differences between members of the same species

Question 2

Interspecific Variation

Answer 2

differences between members of different species

Question 3

Species

Answer 3

breed together to produce fertile offspring

Question 4

Variation relies upon

Answer 4

mutation within a species

Question 5

Evolution operates via

Answer 5

Natural selection

Question 6

Variation

Answer 6

Existence of variety and differences within and between species

Question 7

Discotinuous Variation

Answer 7

individuals fall into one category or another
genetic factors cause variation in catagories
usually controlled by alleles of one or two genes

Question 8

Continuous Variation

Answer 8

show variation that is a continuum (range between 2 extremes)
controlled by interactions between many genes and the environment
multifactorial traits

Question 9

Genetic Diversity

Answer 9

Total number of different alleles of genes in a population

enabling factor to natural selection

Question 10

Adaptive Radiation

Answer 10

Overtime the population as a whole becomes better adapted to the environment and evolved to cope

Question 11

Natural Selection

Answer 11

Mutation creates variation 
Unfavourable mutations selected against 
Reproduction and mutation occurs 
Favourable mutations more likely to survive 
and reproduce

Question 12

Directional Selection

Answer 12

Organisms at the extremes are better adapted
Acts against one of the extremes
this one becomes rare and the other beomes more common

Question 13

Stabalising Selection

Answer 13

Organisms that are more average are more likely to survive

acts against both extremes