32.3 - Do First - Pre vs. Post Zygotic Barriers

Posljednje ažuriranje over 1 year ago

Question 1

00:10

Question 2

00:29

Question 3

01:06

Question 4

01:21

Question 5

01:42

Question 6

01:49

Question 7

02:00

Questions 8 & 9

02:20

Question 10

02:36

Question 11

02:51

Question 1

00:10

Pitanje 1

Speciation is...

the formation of 1 or more species form a current species

the development of special skills within an environment.

Question 2

00:29

Pitanje 2

Reproductive isolation prevents gene flow and the exchanging of DNA for a period of time. What are the two types of reproductive isolation?

prezygotic barriers

postzygotic barriers

kostic separation

hibernation techniques

Question 3

01:06

Pitanje 3

Temporal isolation causes speciation because two different species...

share a meal together

soak in body temperature

breed at different times.

fight to the death for territorial reasons

Question 4

01:21

Pitanje 4

Behavioral isolation includes..

displaying different courtship songs or colors or dances that fail to attract a different species

farting on command

genes are genetically not matching for whatever reason

Question 5

01:42

Pitanje 5

Which type of isolation occurs when animals have different chromosome numbers in their gametes (sperm and eggs) that fail to produce offspring?

gametic isolation

mechanical isolation

habitat isolation

Question 6

01:49

Pitanje 6

Postzygotic barriers...

occur after fertilization/mating

occur before fertilization/mating

Question 7

02:00

Pitanje 7

The trouble with postzygotic barriers is that..

no viable or fertile offspring is produced.

we do not see it in nature but only in a lab.

it is a phenomenon and cannot be completely understood by science.

Questions 8 & 9

02:20

Pitanje 8

What type of postzygotic barriers results in weak or frail offspring?

Reduced Hybrid Viability

Reduced Hybrid Fertility

Pitanje 9

What type of postzygotic barriers results in healthy offspring that are actually sterile or infertile?

Reduced Hybrid Fertility

Reduced Hybrid Viability

Question 10

02:36

Pitanje 10

10.

A mule is a cross between a male donkey and a female horse. Mules are hybrids that cannot produce children of their own. They have...

reduced hybrid viability

reduced hybrid fertility

Question 11

02:51

Pitanje 11

11.

How is "hybrid breakdown" different from reduced hybrid viability and reduced hybrid fertility?

Pitanje 1

Speciation is...

the formation of 1 or more species form a current species

the development of special skills within an environment.

Pitanje 2

Reproductive isolation prevents gene flow and the exchanging of DNA for a period of time. What are the two types of reproductive isolation?

prezygotic barriers

postzygotic barriers

kostic separation

hibernation techniques

Pitanje 3

Temporal isolation causes speciation because two different species...

share a meal together

soak in body temperature

breed at different times.

fight to the death for territorial reasons

Pitanje 4

Behavioral isolation includes..

displaying different courtship songs or colors or dances that fail to attract a different species

farting on command

genes are genetically not matching for whatever reason

Pitanje 5

Which type of isolation occurs when animals have different chromosome numbers in their gametes (sperm and eggs) that fail to produce offspring?

gametic isolation

mechanical isolation

habitat isolation

Pitanje 6

Postzygotic barriers...

occur after fertilization/mating

occur before fertilization/mating

Pitanje 7

The trouble with postzygotic barriers is that..

no viable or fertile offspring is produced.

we do not see it in nature but only in a lab.

it is a phenomenon and cannot be completely understood by science.

Pitanje 8

What type of postzygotic barriers results in weak or frail offspring?

Reduced Hybrid Viability

Reduced Hybrid Fertility

Pitanje 9

What type of postzygotic barriers results in healthy offspring that are actually sterile or infertile?

Reduced Hybrid Fertility

Reduced Hybrid Viability

Pitanje 10

10.

A mule is a cross between a male donkey and a female horse. Mules are hybrids that cannot produce children of their own. They have...

reduced hybrid viability

reduced hybrid fertility

Pitanje 11

11.