Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Biology Ch 16

Evolution of Populations

QuestionAnswer
Proof of evolution Fossils
Random change in allele frequencies Genetic Drift
Formation of a new species Speciation
Genetic drift from population migration Founder Effect
Main source of variation Mutations
Sharp climatic shift Episodic Speciation
Ability to survive and reproduce Fitness
Potential lethal allele carrier Heterozygote
Species can no longer interbreed with original species Reproductive Isolation
Variation within a species, helps ensure species survival Biodiversity
Sharp and sudden decrease in specie numbers Mass Extinction
Happens during meiosis, alleles trade locations Gene Shuffling
Physical separation such as rivers or mountains Geographic Isolation
Change that increases survival chances Adaptation
Individuals in the middle or norm are most fit Stabilizing Selection
Bell curve shifts to the left OR right Directional Selection
Bell curve shifts to the left AND right simultaneously Disruptive Selection
Created by: Mrs.Benc
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards