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32.3 - Do First - Pre vs. Post Zygotic Barriers
By Caleb Guesno
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Last updated about 1 year ago
11 questions
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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
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Question 1
00:10
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Question 2
00:29
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Question 3
01:06
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Question 4
01:21
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Question 5
01:42
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Question 6
01:49
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Question 7
02:00
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Questions 8 & 9
02:20
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Question 10
02:36
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Question 11
02:51
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Question 1
1.
Speciation is...
the formation of 1 or more species form a current species
the development of special skills within an environment.
Question 2
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
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
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
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
6.
Postzygotic barriers...
occur after fertilization/mating
occur before fertilization/mating
Question 7
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.
Question 8
8.
What type of postzygotic barriers results in weak or frail offspring?
Reduced Hybrid Viability
Reduced Hybrid Fertility
Question 9
9.
What type of postzygotic barriers results in healthy offspring that are actually sterile or infertile?
Reduced Hybrid Fertility
Reduced Hybrid Viability
Question 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
11.
How is "
hybrid breakdown
" different from reduced hybrid viability and reduced hybrid fertility?