Mechanisms/Rates Of Speciation P1

Question 0

Allopatric speciation =

Answer 0

Separate geographic distributions with a barrier between them..gene flow = 0

Question 1

Name the forces behind speciation:

Answer 1

Chance
Ecology
Reinforcement
Sexual selection

Question 2

Sympatric speciation =

Answer 2

Overlapping geographic distributions..gene flow = 0.5

Question 3

Peripatric speciation =

Answer 3

Small population of Allopatric species diverging

Question 4

Peripatric speciation =

Answer 4

Different populations all interbreeding, non overlapping geographic distributions..gene flow = 0<0.5

Question 5

Founder effect speciation and mutation order speciation are examples of what force?

Answer 5

Chance

Question 6

Different populations find different genetic solutions to same problem (1 environment)

Answer 6

Mutation order speciation

Question 7

Chance dictates what alleles are found in founder population and the new population diverges

Answer 7

Founder effect speciation - peripatric speciation

Question 8

Speciation is a culmination of …

Answer 8

Variation which led to divergence which led to reproductive isolation

Question 9

Polyploid speciation is associated with what organisms?

Answer 9

Plants

Question 10

Founder effect speciation creates an adaptive ridge which explains which model?

Answer 10

Dobzhansky Muller

Question 11

Unreduced gametes from the same species results in

Answer 11

Autopolyploidy

Question 12

Unreduced gametes from different species results in

Answer 12

Allopolyploid

Question 13

Divergent selection between environments leads to barriers to gene flow is an example of what force?

Answer 13

Ecology

Question 14

Environmental differences are:

Answer 14

Habitat structure
Climate
Resources

Question 15

Ecological interactions are:

Answer 15

Disease
Competition
Behavioural interference

Question 16

Which force is normally frequency dependent?

Answer 16

Ecological interaction

Question 17

Competition can be…

Answer 17

Inter or intra specific

Question 18

Speciation needs what to be completed?

Answer 18

Pre and postzygotic isolation

Question 19

Reinforcement is a result of

Answer 19

Indirect isolation - 2 allele system does not influence fertility/inviability but is linked to one that does

Question 20

Reinforcement relies on

Answer 20

Linkage disequilibrium which is opposed by recombination

Question 21

For speciation finalisation, it requires

Answer 21

2 different eco morphs in different proportions to come together