Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

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

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


Science Pre-AP

Evolution the process in which population changes over time
What are the types of evolution? microevolution and macroevolution
Microevolution evolution or change on a small scale
Macroevolution evolution or change on a large scale
Population Genetics the science that studies the change in distribution of traits within a species population (A.K.A gene pool)
Species Organisms that are so genetically similar that they have the potential to breed and produce that are viable and fertile
Viable living
Fertile able to reproduce eventually themselves
What four criteria is population defined by? Same species of organism Located in the same location At the same time And showing signs of reproduction (offspring is present within the group)
Geographic Range the geographical area within which a species can be found
Organisms that are common may have... several populations that cover a wide range
What is one example of a range that is global? humans
Geographic Barriers large mountains or bodies of water
Do individuals evolve? no; but populations do
Can you change DNA? no
Mutations random changes that occur in an organism’s DNA. Some help individuals survive in their environment and reproduce and some do not. Other mutations have no effect
If a mutation (change) occurs in the DNA of sex cells (gametes) of the parent(s) then what happens? changes can be inherited by the offspring
Allele Frequency how many alleles are present at that time within the population
Fixed there is no change in frequency; no evolution is present (a state of equilibrium)
Evolving frequency is changing; evolution is occurring (a state of change over time)
There are always how many traits for an allele? 2
Created by: S732581nc