Question

Question 1A.

In which case would the biological species concept not be useful?

a. Multiple kinds of birds that look different and occur sympatrically

b. Parthenogenetically (asexually) reproducing lizards

c. Big cats living in Asia and big cats living in Africa

d. Both a and b

e. both b and c

Quesiton 1B:

Which of these is not an example of a prezygotic (or pre-mating) isolating barrier?

	a.	flowers that release their pollen at different times of day
	b.	male birds in one population sing at a different rate than neighboring populations
	c.	female fish that prefer one color of mate more than an alternative color choice
	d.	hybrid offspring cannot produce viable gametes
	e.	these are all examples of pre-mating isolation

Question 1C:

Which of these is an example of a postzygotic isolating barrier?

	a.	female birds that are not attracted to the plumage (feather colors) of male birds of a different species
	b.	hybrid offspring of two species of mice that can produce viable gametes but cannot find a mate
	c.	male genitalia of a male porcupine that doesn't match with the female genitalia of a different species
	d.	two species of bats breeding in different habitats
	e.	coral species that spawn at different times of the night

Answer 1

1A- THE case would the biological species concept not be useful IS

a-Multiple kinds of birds that look different and occur sympatrically

b. Parthenogenetically (asexually) reproducing lizards

(because it is all about the interbreeding )

1B- male birds in one population sing at a different rate than neighboring populations is not an example of a prezygotic (or pre-mating) isolating barrier. because they prevent from interbridding.in this reproductive isolation is also involved.

1C-example of a postzygotic isolating barrier is hybrid offspring of two species of mice that can produce viable gametes but cannot find a mate.

postzygotic barrier is when a zygot formed.and when the two species are capable of producing,but their offspring are not able to make a normal growth life or they can not do the reproduction.