4th Q CQE Review bio-Ch 18 and 20

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2 populations of birds have different mating songs. This is an example of

A factor that is necessary for the formation of new species is

when 2 populations have different mating or courtship behaviors, this is called

in this type of selection, the middle is the least fit. The 2 ends have a higher level of fitness

when 2 populations are separated by geographic barriers, this is called

one population of beetles mates during the day. Another prefers to mate at night. This is an example of

In this type of selection, the middle has the highest level of fitness

2 populations of chipmunks can't mate due to a large mountain range keeping them apart. This is called