Quiz Chapter 22 pt2

Question 1

What does the biological species concept use as the primary criterion for determining species boundaries?

Answer 1

Gene Flow

Question 2

A hybrid zone is properly defined as?

Answer 2

An area where mating occurs between members of two closely related species producing viable offspring

Question 3

Which of these should decline in hybrid zones where reinforcement is occurring?

Answer 3

Gene flow between distinct gene pools.

Question 4

Among known plant species, which of these have been the two most commonly occurring phenomena that have led to the origin of new species.

Answer 4

2. Sympatric Speciation

4. Polyploidy

Question 5

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms.

Answer 5

Habitat isolation

Question 6

Which of the following factors would not contribute to allopatric speciation,

Answer 6

Gene flow between 2 populations is extensive.

Question 7

The difference between geographic isolation and habitat differentiation is the

Answer 7

Relative locations of 2 populations as speciation occurs.

Question 8

The phenomenon of fusion is likely to occur when, after a period of geographic isolation, two populations meet again and

Answer 8

An increasing number of viable, fertile hybrids is produced over the course of generations.