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.
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.
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


What type of reproduction that creates identical offspring? asexual
What process produces non-identical gametes? meiosis
Genetic variability is created by sexual reproduction, different alleles for a gene and what? mutations
What are alternate forms of a gene called? alleles
What type of reproduction leads to genetic variability? sexual reproduction
Gametes produced through meiosis are not identical because of independent assortment AND what process? crossing over
A beneficial one of these can lead to a new allele for a gene. A harmful one of these often leads to genetic defects and death mutations
The gene for eye color might have a blue and brown one of these? alleles
If an organism has two different alleles for a trait they are said to be what? heterozygous
If a population is at a genetic equilibrium (gene frequencies remain the same) then evolution is or is not occurring? is NOT.
If natural selection is favoring a particular form of a trait and non of the other forms (black color only) then what type of selection is most likely occurring? directional
If a population is undergoing evolution then the frequency of genes is changing or not changing? changing
An individual who is Bb is a carrier of a recessive allele which promotes genetic variability. A Bb individual for a trait is said to be what? heterozygous
If a population is stable with 30% black and 70% brown, the population is in what? genetic equilibrium.
If natural selection is favoring two extreme forms of a trait (black and white but not brown), what type of selection is most likely occurring? disruptive
If natural selection is favoring the most common form of a trait then what type of selection is most likely occurring? stabilizing
Created by: PRO Teacher jhaase