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

BIO Chapter 14

Mendel and the Gene Idea

Who is Mendel? scientist who made genetic breakthroughs by studying peas
Why did Mendel use peas for his research? rapid growth and he could manually control who mated with who
P generation- true-breeding parents
F1 generation- p generation hybrid offspring
F2 generation- second filial generation
True-breeding- over many generations of self-pollination they only produce the same variety as the parent plant
What was the ratio of all of Mendel’s initial experiment? 3/4 to ¼
Phenotype- expression of a physical trait
Alleles- alternate versions of genes
Genotype- genetic makeup
Dominant allele- determines appearance
Recessive allele- has no noticeable effect on appearance
Segregation- two alleles for a heritable character segregate during gamete formation and end up in different gametes.
Punnett square- diagraming tool used to predict allele formation
Homozygous- a pair of identical alleles
Heterozygous- two different alleles for the same gene
Multiplication rule- the probability of two independent events occurring in combination is equal to the product of their separate probabilities
Incomplete dominance- situations in which a heterozygote for a character doesn’t show a complete dominance/recessive relationship
Co-dominance- when an organism is heterozygote for a character and both alleles affect the phenotype in separate, distinguishable ways.
Pleiotropy- when a single gene has many phenotypic effects (i.e. sickle cell)
Epistasis- a gene at one location alters the expression of a gene at another location
Polygenic inheritance- many genes influence a particular character
Quantitative characters- often show polygenic inheritance patterns
Environmental impact on phenotype- how environment can influence phenotype
Multifactorial characters- affected by many factors i.e. genotype and environment
The norm of reaction: the pattern of phenotypes produced by a given genotype under different environmental conditions
Narrow norm of reaction- albinism, ABO blood type, Huntington disease
Broader norm of reaction skin color, height, IQ
Created by: mr_spangler



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