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


study guide flashcards

Traits are influenced by genes and environmental factors. explain the difference genes are more coded into you. environmental factors are like being around a tall person makes you taller.
What is a carrier? an organism that carriers you till you are born.
What are the male and female sex chromosomes? Male: xy Female: xx
how does down syndrome occur? there is an extra chromosome in set #21
What is sickle-cell anemia? where the blood cells are not round and affects oxygen/breathing.
Describe DNA its shape is a double helix. the chemicals are adenine, thymine, guanine, cytosine
What rules must be followed when ATCG bases are paired up? AT are always together. CG are also always together.
What is a karyotype? a photograph of a persons set of chromosomes.
What is selective breeding? humans select what traits they want an organism to have.
What is inbreeding? Crossing 2 individuals that have identical or similar sets of alleles.
What is cloning? an organism that is genetically identical to the organism from which produced.
What is a genome? all the DNA in one cell of an organism
What was the purpose of the human genome project? provide scientists with an encyclopedia of genetic information about humans.
What is a mutation? a change in the nucleotide sequence of a gene or DNA molecule.
Describe the types of mutations that can occur. Cigarette smoke and ultra violet radiation.
what is a gene? one set of instructions for an inherited trait.
What is genetic engineering? a process where genes from one are transferred into another.
what is the difference between mitosis and meiosis? mitosis is the division of body cells and divides once. Meiosis is the division of sex cells and divides twice.
what is unique about an identical twin's DNA? They are the exact same DNA or extremely similar.
Created by: Awesomepossem123



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