Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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
Know
remaining cards
Save
0:01
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:
Retries:
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

AgEny2l 4

the chromosomal basis of DNA

QuestionAnswer
Thomas Hunt Morgan genes are found on chromosomes
Drosophila are used because there are lots of offspring, they have four pairs of chromosomes
genetic linkage genes on the same chromosome can be linked if they are close together
X linked genes do not independently assort but instead form recombinants
during prophase 1 of meiosis chiasmata form which lead to recombinants
linkage is said to be incomplete if new combinations occur in the offspring
to make a genetic map of a chromosome recombinant frequencies are used
a 1% recombination is called a centimorgan
the smaller the recombination percentage the closer the genes
the retina contains cone cells which absorb coloured light
the gene for cones which absorb blue light are on autosmomes
the gene for cones which absorb red light(protan) and green light(deutan) is on the x chromosome
there are two types of haemophilia Haemophilia A and B
in haemophilia A factor 8 is missing
in haemophilia B Factor 10 is missing...Christmas disease
egg cells are also called homogametes
sperm cells are also called heterogametes
males have more sex linked disorders due to the length of the Y chromosome there is less likelyhood of crossing over
Fragile x syndrome caused by repeating base triplets cgg on an x chromosome
Created by: MKHealy