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


gametes sex cells-sperm and egg
oogenesis meiosis which produces 1 egg cell
spermatogenesis meiosis which produces 4 sperm cells
asexual reproduction one organism divides into two new cells example is bacteria
placenta exchange of nutrients, oxygen, and removes wastes between mother and baby
uterus place where baby grows and develops
testes and ovaries place where meiosis occurs in the body
sexual reproduction involves two parents to produce an offspring. Example is human reproduction of sperm and egg
homologous paired chromosomes the form a tetrad during prophase 1
crossing-over parts of homologous chromosomes exchange information and leads to genetic variation (difference)
diploid 2 sets of chromosomes represented by 2N found in somatic cells
haploid 1 set of chromosomes represented by 1N or N found in gamete cells
somatic cells body cells
meiosis process of reduction division in which the chromosome number is cut in half through 2 cell divisions
Prophase 1 crossing-over occurs
Result of Meiosis 4 different haploid cells
Created by: JMHSBIO