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

raegans bio review

review for test

inheritance passing of traits from one generation to the next
genetics study of inheritance
alleles different forms of genes (ex: tall plant or short plant)
Gregor mendel used pea plants to study inheritance patterns
what did Mendel determine some alleles are dominant : some alleles are recessive : dominant alleles are always expressed and mask other traits : recessive alleles are only expressed if dominant alleles are not present
sex-linked traits that are carried on the X chromosome and not the Y males only receive one copy of an allele
autosomes Any chromosome not considered as a sex chromosome
genotype phenotype heterozygous homozygous (genotype) genes an organism has (BB bb Bb) (phenotype) physical appearance (homo) same alleles (hetero) diffrent alleles
genotype ratio vs phenotype ratio genotype ratio: 1LL : 2Ll : 1ll phenotype ratio: 3 tall : 1 short
pedigree used to show inheritance of traits thru generations
incomplete dominance one allele is NOT completly Dominant over another ( they blend )
codominance both alleles are expressed
multiple alleles 3 or more alleles of same gene that code for a single trait (ex: blood type-3 alleles A,B,O)
polygenic traits traits that are carried on more than 1 pair of chromosomes (ex: eye color)
chromosomal mutation change in entire genes or chromosomes TYPES: deletion insertion translocation inversion non-disjunction
nondisjunction meiosis mistake, failure of chromosome pairs to separate
monosomy loss of a single chromosome (daughter cell will have one missing chromosome)
trisomy gaining a single chromosome
down syndrome : turners syndrome : klinefelters syndrom (down) trisomy 21- extra chromosome (turners) missing sex chromosome X (klinefelters) extra sex chromosome X
karyotype : human genome project (karyotype) picture of an individuals chromosomes (human genome project) project to understand order of bases for all human genes found in our DNA
during meiosis... parent cell divides twice, making 4 haploid cells
what does meiosis produce sex cells or gametes (ex: sperm and egg)
haploid sex cells (contains only one copy of each chromosome) (ex: human sex cells=23 chromosomes)
when does crossing over occur during meiosis when chromosome pairs exchange pieces
what results in variation sexual reproduction, crossing over during meiosis, mutations
Created by: raeganskees
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