Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

From the DemiDec 2008 Super Quiz Cram Kit

Adaptive radiation

divergence of a common ancestor in a new environment


geographic seperation of species

Balancing selection

favors heterozygous organisms

Direct fitness

number of its own alleles that an organism passes to the next generation through reproduction

Directional selection

favors traits at one end of spectrum

Disruptive selection

favorts traits at both ends of spectrum


trait that has changed in purpose over time

Horizontal transfer

genetic transfer between different species

Indirect fitness

number of alleles identical to its own that an organism's relatives contribute to the next generation due to the organism's help


affects entire species


affects populations

Stabilizing selection

favors intermediate traits


ecological seperation and geographic unification of species

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 and try again


Reload the page to try again!


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

Voice Recording