Course

Evolution

Study Pack

Set 16 Mechanisms Of Speciation

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Question 1

(Multiple Choice)

Free
Organisms such as prokaryotes (bacteria and archaea)―along with some eukaryotes―reproduce asexually.In the case of bacteria and archaea in particular,which exchange DNA but do not reproduce utilizing conventional sexual reproduction,the BEST way in which to define species is with ________.

A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) an ecological species concept

Answer

Question 2

(Multiple Choice)

Free
It now seems clear that the strongest factor in speciation events is ________.

A) genetic drift
B) sexual selection
C) natural selection
D) the bottleneck effect

Answer

Question 3

(Multiple Choice)

Free
Which of the following models of speciation hinges on a physical barrier which prevents gene flow between populations?

A) dispersive allopatric
B) dispersive sympatric
C) vicariant allopatric
D) vicariant sympatric
E) Both A and C.

Answer