Reproductive Barriers

Question 1

Prezygotic

Answer 1

Fertilization is prevented
This is the barrier that separates all the distantly related species

Question 2

Prezygotic Examples

Answer 2

Genetic and chromosomal differences
Gametes don’t align
Temporal isolation. (Mating times don’t align)
Behavioral isolation (mating rituals)
Habitat isolation (occupy different habitat within same area)
Mechanical isolation (reproductive systems don’t fit together)

Question 3

Habitat isolation example

Answer 3

Parasites species specific

Question 4

Post zygotic barriers

Answer 4

Offspring can be produced not visible or poorly viable

Question 5

Post zygotic barriers examples

Answer 5

Infertile offspring (mule, hinny)
Poorly viable offspring (lose struggle for survival)
Poorly viable hybrids (with parent population)