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Speciation
Test Description: Speciation
Instructions: Answer all questions to get your test result.
1) A _______________ is a group of individuals capable of interbreeding to produce fertile offspring.
A
genus
B
species
C
community
D
kingdom
2) Approximately how many species have been described?
A
2 billion
B
2 million
C
10 million
D
1 million
3) The key to speciation is _____________________of populations.
A
reproductive isolation
B
extinction
C
reproductive health
D
population growth
4) ______________ speciation occurs when geographic isolation creates a reproductive barrier
A
polypatric
B
parapatric
C
sympatric
D
allopatric
5) _______________ speciation occurs when a reproductive barrier is created by something other than geographic isolation
A
polypatric
B
parapatric
C
sympatric
D
allopatric
6) Which one below is NOT a reproductive isolating mechanism?
A
behavioral isolation
B
individual isolation
C
temporal isolation
D
ecological isolation
7) Best estimates from the fossil record indicate that greater than ____% of species that have exited are now extinct.
A
25
B
99
C
50
D
75
8) The reproductive isolating factor that occurs when an egg and sperm are incompatible is refered to as
A
gametic isolation
B
ecological isolation
C
temporal isolation
D
behavioral isolation
9) The reproductive isolating factor that occurs when individuals of a species mate at different times is refered to as
A
gametic isolation
B
behavioral isolation
C
ecological isolation
D
temporal isolation
10) A typical “lifetime” for a species is about ____million years.
A
1
B
100
C
10
D
1000
*select an answer for all questions
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