4th Q CQE Review Bio-Ch 18 And 20 Question Preview (ID: 56505)


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In this type of selection, one end of the bell curve has a higher level of fitness than the middle or other end
a) Directional
b) stabilizing
c) disruptive
d) tacos

In this type of selection, the middle has the highest level of fitness
a) directional
b) stabilizing
c) disruptive
d) tacos

in this type of selection, the middle is the least fit. The 2 ends have a higher level of fitness
a) directional
b) stabilizing
c) disruptive
d) tacos

the average acorn circumference is 3cm. There are very few acorns that are 2cm or 4cm. This is which type of selection?
a) stabilizing
b) directional
c) disruptive
d) tacos

In a population of birds, there are small, medium, and large beaks. A drought occured, killing off all the food sources for medium and large beaks. What type of selection will occur?
a) tacos
b) disruptive
c) stabilizing
d) directional

In a population of birds, there are small, medium, and large beaks. A drought occured, killing off all the food sources for only medium sized beaks. What type of selection will occur?
a) stabilizing
b) disruptive
c) directional
d) tacos

A factor that is necessary for the formation of new species is
a) a geographic barrier
b) reproductive isolation
c) reproduction at different times
d) different mating behaviors

2 populations of birds have different mating songs. This is an example of
a) behavioral isolation
b) temporal isolation
c) geographic isolation
d) tacos

when 2 populations reproduce at different times of the year, this is called
a) temporal isolation
b) behavioral isolation
c) geographic isolation
d) tacos

when 2 populations have different mating or courtship behaviors, this is called
a) temporal isolation
b) geographical isolation
c) behavioral isolation
d) tacos

one population of beetles mates during the day. Another prefers to mate at night. This is an example of
a) behavioral isolation
b) temporal isolation
c) geographic isolation
d) tacos

when 2 populations are separated by geographic barriers, this is called
a) temporal isolation
b) geographic isolation
c) behavioral isolation
d) tacos

2 populations of chipmunks can't mate due to a large mountain range keeping them apart. This is called
a) geographic isolation
b) behavioral isolation
c) temporal isolation
d) tacos

Mass extinction would most likely result from which of the following events?
a) a wildfire burns a national park
b) a massive earthquake strikes North America
c) tacos
d) global temperatures drop several degrees after several massive volcanic eruptions

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