Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

DNA profiling

Forensics

QuestionAnswer
What are the non-coding regions of DNA called? Introns
What are the coding regions of DNA called? Exons
What does STR stand for? Short tandem repeat
What is an STR? A repeated sequence of introns
How do introns at the same locus on a chromosome vary between two different people? The STRs are have a different number of repeats
Where can a DNA sample be obtained from? Almost all biological tissue, such as a cheek swab, white blood cells, bone marrow or sperm
Where are restriction enzymes naturally found? Bacteria
How are DNA fragments separated? Gel electrophoresis
What is the gel made from? Agarose
Why is a reference sample needed? To provide a comparison for the DNA profile
What technique is used to transfer the DNA to a nylon or nitrocellulose membrane? Southern blotting
Why are multiple loci used? More than one person may have the same number of STRs at each loci, so the more loci used reduces the similarity between profiles
How can the DNA fragments be detected if they are radioactive? Using an X-ray film
How can the DNA fragments be detected if they are fluorescent? Using UV light
Why is there two figures for each STR? The number of repeated sequence is different on each chromosome in a homologous pair
Created by: stu033834
Popular Biology sets

 

 



Voices

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:
Retries:
restart all cards