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A typical “lifetime” for a species is about ____million years.
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
_______________ speciation occurs when a reproductive barrier is created by something other than geographic isolation
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
Best estimates from the fossil record indicate that greater than ____% of species that have exited are now extinct.
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
Which one below is NOT a reproductive isolating mechanism?
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
The key to speciation is _____________________of populations.
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
The reproductive isolating factor that occurs when individuals of a species mate at different times is refered to as
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
The reproductive isolating factor that occurs when an egg and sperm are incompatible is refered to as
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
Approximately how many species have been described?
sympatric
gametic isolation
1
temporal isolation
2 million
99
reproductive isolation
individual isolation
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