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

Lesson 20

Genes and Dominance

TermDefinition
Hybrid Organisms that have two different alleles for the same trait, they are also the offspring of parents with different characteristics
Genes segments of DNA, responsible for the passing of traits and the expression of those traits. These segments code for proteins
Alleles one of a number of different forms of the same gene, can be expressed as either B or b, but Bb together would be a gene
Dominant A trait that overshadows the expression of another form of the same trait, it is always expressed and written as a capital letter (example would be "B")
Recessive A form of an allele that is only expressed in the (homozygous state) presence of another recessive allele, an example would be "b" instead of "B"
Punnett Square a tool that allows geneticists the ability to explain some of the principles of genetics and to predict possible outcomes of certain crosses
Heredity the passing of genetic traits from one generation to the next
Law of Segregation states that alleles separate from each other during the formation of gametes (eggs and sperm)
Law of Independent Assortment states that each gene (pair of alleles), if not connected, should segregate independently
Homozygous Organisms that have the same alleles for the same trait, example would be "BB" or "bb"
Heterozygous organism has two different alleles for the same trait, example would be "Bb"
Genotype the genetic makeup of an organism, an example could be "BB for homozygous and "Bb" for heterozygous
Phenotype The physical appearance of traits in an organism. It basically is what the organism looks like- example would be "BB" for the genotype and "black fur" would describe this.
Created by: ecotteacher
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