Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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


turtles with different shaped shells and finches with different beaks species that Darwin studied
Charles Darwin father of evolution
Natural Selection/Survival of the Fittest Individuals with adaptations best suited to their environment survive, reproduce, and pass their hertiable traits to their offspring.
Artificial Selection Breeders select variations that they find most useful to improve crops and livestock
Genetic Recombination Crossing-over and sexual reproduction lead to an increase in genetic variation
gametes mutations must occur here in order to get passed on
genetic drift by chance genes are passed on to offspring because they survived a catastrophic event
gene flow a NEW allele enters (migrates) into the gene pool and changes the allele frequency
punctuated equilibrium model of evolution in which sudden (rapid) changes occur
gradualism model of evolution that is slow and steady in the process, many years
vestigial structure has lost all or part of its orginial function; pelvic bones in whale, appendix in humans
homologous structure same structure but different function ex. whale flipper and bat wing
analogous structure same function but different structure ex. butterfly wing and bat wing
molecular evidence similarities in DNA, proteins, amino acids
cladogram a branching diagram that shows relationships between organisms
Created by: JMHSBIO
Popular Biology sets




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:
restart all cards