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.

Remove Ads
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




share
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

Biology: Chapter 121

Chapter 12.1 Vocabulary

TermDefinition
Sex Chromosome contains genes that determine the sex of an individual
Autosome the remaining chromosomes that are not directly involved in determining the sex of an individual
Sex-Linked Trait refers to a trait that is coded for by an allele on a sex chromosome
Linked Gene pairs of genes that tend to be inherited together
Chromosome Map a diagram that shows the linear order of genes on a chromosome
Map Unit a frequency of crossing-over of 1 percent
Germ-Cell Mutation a mutation, a change in the nucleotide-base sequence of a gene or DNA model, that occurs in an organism's gametes
Somatic-Cell Mutation a mutation that occurs in an organism's body cells and can therefore affect the organism
Lethal Mutation mutations that can cause death, often before birth
Deletion a loss of a piece of a chromosome due to breakage
Inversion when a chromosomal segment breaks off, slips around backward, and reattaches
Translocation when a piece of one chromosome breaks off and reattaches to a nonhomologous chromosome
Nondisjunction a chromosome fails to separate from its homologue during meiosis
Point Mutation a change that occurs within a single gene or other segment of DNA on a chromosome
Substitution when one nucleotide replaces another; the amino acid can be changed
Frameshift Mutation can result as a loss of a nucleotide; when all amino acids downstream from the lost nucleotide change
Insertion Mutation when one or more nucleotides are added to a gene, which can also result in a frameshift mutation
Created by: truongm19