biology assessment: chapter 14: evolution

10 terms by s501181 

Create a new folder

Advertisement Upgrade to remove ads

Charles Darwin's main focus was on the gradual process of adaptation within populations. This form of change _____

cannot account for increases in species diversity over time

Two animals are considered members of different biological species if they _____.

are male and female, but cannot interbreed

Often, the morphological species concept is used to define and describe species. Why?

This is the most convenient way of identifying species, and it is one of the few ways to identify fossil or asexual species.

The following options are all reproductive barriers. Which one is an example of a prezygotic barrier in which the two different species do mate?

Two dragonfly species regularly mate, but their gametes are incompatible.

Which of these is an example of temporal isolation?

One species is diurnal (day active) and mates at high noon; the other is nocturnal (night active) and mates at midnight.

What is the first step in allopatric speciation?

geographic isolation

Sympatric speciation is _____.

the appearance of a new species in the same area as the parent population

_____ generated many key crop plant species in the past, and continues to be an important method for plant geneticists today.

Sympatric speciation by polyploidy

The evolution of numerous ecologically diverse species in a relatively short time period, such as Darwin's finches, from a single ancestor is called _____.

adaptive radiation

According to the _____ model, evolution occurs in spurts: Species evolve relatively rapidly and then remain unchanged for long periods.

punctuated equilibrium

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set