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.
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

BIO Chapter 13


Gametes- reproductive cells
Haploid- single set of chromosomes in gamete cells produced by ovaries and testies
Diploid cell- cell formed by egg and sperm coming together, single cell
Zygote- fertilized egg
Somatic cells- diploid, 46 chromosomes, 23 from each parent
Autosomes- a chromosome not directly involved in determining sex
Sex chromosomes- determines sex of a child
Homologous chromosome- two chromosomes of pair with the same length, centromere position, and staining pattern
Karyotype- a pair of homologous replicated chromosomes
Meiosis 1- separates homologous chromosomes
Prophase 1- spindle forms, chromosomes condense, nuclear envelope breaks down
Metaphase 1- pairs of chromosome arrange in a line
Anaphase 1- homologous chromosomes separate and head towards poles
Telophase 1 and cytokinesis- two haploid cells form, each chromosome still has two sister chromatids
Meiosis 2- sister chromatids separate
Prophase 2- spindle forms, chromosomes begin to drift toward metaphase plate
Metaphase 2- chromosomes position in a line, crossing over causes these chromosomes to be genetically different
Anaphase 2- sister chromatids split, moving as individual chromosomes towards poles
Telophase 2 and cytokinesis- nuclei form, chromosomes condense, four genetically different daughter cells form
Crossing over- occurs in metaphase 2, causes chromosomes to be genetically different
Random fertilization- a way of genetic variation by the sperm randomly selecting egg cells
Independent assortment- random grouping together of chromosomes at metaphase 1 that causes genetic variance
Created by: mr_spangler



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