Reproductive Isolating Examples

Question 1

A short bushy red hibiscus flower is pollinated by bees, and a tall white hibiscus flower is pollinated by hummingbirds.

Answer 1

• Mechanical Isolation

- Ecological Isolation

Question 2

An ewe (female sheep) impregnated by a male goat suffers a miscarriage.

Answer 2

-Hybrid Inavalibility

Question 3

An experiment fails when a fish breeder tries to fertilize trout eggs with salmon semen. A few eggs hatch but they lack vigour, many are deformed.

Answer 3

-Hybrid Breakdown

Question 4

During spring nights the distinctive call of male wood frogs and spring peepers can be heard coming from the same pond.

Answer 4

-Behavioural Isolation

Question 5

Lions and tigers will breed in captivity but produce sterile offspring.

Answer 5

-Hybrid Sterility

Question 6

Sticklebacks spend most of their time feeding close to the shoreline of a lake that is also inhibited by sticklebacks that feed mostly in deep water near the lakebed.

Answer 6

-Ecological Isolation

Question 7

Two types of snakes share an over wintering burrow and diet, but mate at different optimal temperatures.

Answer 7

-Temporal Isolation

Question 8

Two voles hibernate in different places. They occasionally mate, but their sperm and egg don’t fuse.

Answer 8

-Gametic Isolation