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


number of chromosomes in humans 23
percent related to either parent or any sibling 50%
homozygote dominant/recessive cross results all heterozygotes
heterozygote and homozygote recessive cross results 1/2 homozygote recessive, 1/2 heterozygote
two heterozygotes cross 1/2 heterozygotes, 1/4 homozygous recessive, 1/4 homozygous dominant
components of gene transmission dominant and recessive and any complications to simple dominance
complications to simple dominance multiple gene effects, sex linkage, codominance, parental coding, crossing over, and x-deactivation
example of multiple gene effects partial albino gene at a different chromosome affects hamster coat color (if recessive, they get a normal color. if not, albino trumps the color coded on the other chromosome)
examples of sex linkage hemophilia (skips a generation when manifesting), color blindness-- usually affects males more frequently
codominance two dominant genes can produce their effects together (Ex. the ABO blood typing system-- A and B are both dominant)
parental coding gene expression is affected by which parent you got it from
crossing over homologous pairs exchange parts of chromosomes to create new genetic combinations
x-deactivation one X chromosome turns off in different cells during development of females to rectify the unbalance between males (XY) and females (XX) (Ex. calico cats)
Created by: Jean-O