Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
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

MC - Genetics

Multicellular Organisms - Genetics

What is an allele? Different forms of the same gene
What is a phenotype? The physical appearance due to genetic trait
What is a genotype? the 2 alleles present e.g. BB or bb or Bb
How many dominant alleles do you need to allow the dominant phenotype to show One
How many recessive alleles do you need to allow the recessive phenotype to show Two
What is homozygous? Two of the same alleles (e.g. BB or bb)
What is heterozygous? Two different alleles (e.g. Bb)
What are the names for the generations in a family tree? P, F1 and F2
Why are predicted ratios of offspring not always the observed ratio? Fertilisation is a random process.
Define discrete variation. A characteristic that can be split up into groups.
Define continuous variation. A characteristic that shows a wide range or variation.
Tongue rolling is a characteristic split up into groups, is this an example of a discrete or continuous variation? Discrete
Height is a characteristic that shows a wide range of values, is this an example of discrete or continuous variation? Continuous
Which type of graph would represent a continuous characteristic? Line graph
Which type of characteristic would represent a discrete characteristic? Bar graph
Define polygenic inheritance A characteristic controlled by more than one gene
Is continuous or discrete variation an example of polygenic inheritance? Continuous
Is the term blue eyes a genotype or a phenotype? Phenotype
Are the letters Bb a genotype or a phenotype? Genotype
Single gene inheritance is shown by which type of variation? Discrete
State the only genotype that will show a recessive characteristic. bb (two small letters)
If two dominant parents have a recessive child, are they heterozygous or homozygous? Heterozygous (Bb) (This allows them both to pass on the small b)
If two heterozygous individuals are crossed, what is the predicted ratio of offspring? 3 dominant : 1 recessive
Blood type is a characteristic split up into groups, is this an example of continuous or discrete variation? Discrete
State the term for different versions of the same gene? Allele
State the term for a characteristic controlled by more than one gene Polygenic
What is a gene A section of a chromosome that codes for a characteristic
If a homozygous dominant individual was crossed with a recessive individual, what percentage show a dominant phenotype? 100%
If a heterozygous individual was crossed with a recessive individual, what percentage show a recessive phenotype? 50%
Created by: StNiniansHS
Popular Biology sets




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