Types of reproductive isolation

Question 1

a collection of mechanisms, behaviors, and physiological processes that prevent the
members of two different species that cross or mate from producing offspring, or which ensure that any offspring that may be
produced is not fertile.

Answer 1

Reproductive isolation

Question 2

if individuals of the two populations were to
be brought together, mating would be improbable, but if mating did occur, offspring
would be non-viable or infertile because of _____

Answer 2

reproductive isolation

Question 3

prevent fertilization
and zygote formation.

Answer 3

Pre-zygotic isolation mechanisms

Question 4

allow fertilization but
nonviable or weak or
sterile hybrids are formed.

Answer 4

Postzygotic isolation
mechanisms

Question 5

is a form of reproductive isolation, in which reproduction between two populations (generally two species that
are capable of interbreeding) is
restricted because each population occupies a different habitat.

Answer 5

HABITAT ISOLATION

Question 6

isolation can result in species that are physically similar and may even live in the same habitat, but if their breeding schedules do not overlap
then interbreeding will never occur.

Answer 6

TEMPORAL ISOLATION

Question 7

the presence or absence of a
specific behavior that prevents
reproduction between two species from taking place

Answer 7

BEHAVIORAL ISOLATION

Question 8

a physical incompatibility between reproductive organs of two organisms.

Answer 8

MECHANICAL ISOLATION

Question 9

incompatibilities between egg and sperm prevent fertilization

Answer 9

GAMETIC ISOLATION

Question 10

occurs if individuals successfully mate and a zygote is formed, but the resulting offspring is unsuccessful.

Answer 10

POSTZYGOTIC ISOLATION
MECHANISM

Question 11

The hybrid offspring is either weaker than the parent species, or totally inviable (meaning it cannot stay alive).

Answer 11

HYBRID INVIABILITY

Question 12

Even if the hybrid offspring is
otherwise perfectly healthy, either one or both sexes is sterile. This means it doesn’t have functional gametes.

Answer 12

HYBRID STERILITY

Question 13

We get successful mating
with viable, fertile offspring, but when the offspring try to have offspring, things go wrong.
The second generation can be either inviable, infertile, or show reduced fitness. Either way it’s
just not working out.

Answer 13

HYBRID BREAKDOWN

Question 14

Pre-zygotic isolation
mechanisms :

Answer 14

HABITAT ISOLATION
TEMPORAL ISOLATION
BEHAVIORAL ISOLATION
MECHANICAL ISOLATION
GAMETIC ISOLATION

Question 15

Postzygotic isolation
mechanisms :

Answer 15

HYBRID INVIABILITY
HYBRID STERILITY
HYBRID BREAKDOWN