Speciation: Question Preview (ID: 1593)


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A _______________ is a group of individuals capable of interbreeding to produce fertile offspring.
a) community b) species c) genus d) kingdom
Approximately how many species have been described?
a) 1 million b) 2 million c) 10 million d) 2 billion
The key to speciation is _____________________of populations.
a) extinction b) population growth c) reproductive health d) reproductive isolation
______________ speciation occurs when geographic isolation creates a reproductive barrier
a) sympatric b) parapatric c) allopatric d) polypatric
_______________ speciation occurs when a reproductive barrier is created by something other than geographic isolation
a) sympatric b) parapatric c) allopatric d) polypatric
Which one below is NOT a reproductive isolating mechanism?
a) ecological isolation b) individual isolation c) temporal isolation d) behavioral isolation
Best estimates from the fossil record indicate that greater than ____% of species that have exited are now extinct.
a) 50 b) 75 c) 25 d) 99
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
The reproductive isolating factor that occurs when individuals of a species mate at different times is refered to as
a) gametic isolation b) ecological isolation c) temporal isolation d) behavioral isolation
A typical “lifetime” for a species is about ____million years.
a) 1000 b) 100 c) 10 d) 1
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