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

PBS Unit 2.2 Vocab

TermDefinition
alleles Different versions of the same gene that determine variations of a trait.
autosomes Chromosomes that are not sex chromosomes; humans have 22 pairs.
Centromere The region of a chromosome that holds sister chromatids together.
chromatid One identical half of a duplicated chromosome.
chromosome A structure made of DNA and proteins that carries genetic information.
deletion mutation A mutation in which one or more nucleotides are removed from DNA.
DNA Deoxyribonucleic acid; the molecule that stores genetic instructions for living organisms.
DNA Primer A short strand of nucleic acid that provides a starting point for DNA replication.
dominant allele An allele that is expressed whenever it is present, even if only one copy exists.
eukaryotic Cells that contain a nucleus and membrane-bound organelles.
Familial Hypercholesterolemia An inherited disorder causing high cholesterol due to a genetic mutation affecting LDL receptors.
frameshift mutation A mutation caused by insertion or deletion that shifts the reading frame of DNA.
gene A segment of DNA that codes for a protein or trait.
genome The complete set of genetic material in an organism.
genotype The genetic makeup or allele combination of an organism.
gel electrophoresis A laboratory technique used to separate DNA fragments based on size using an electric current.
heterozygous Having two different alleles for a gene.
homologous chromosomes Chromosome pairs with the same genes, one inherited from each parent.
homozygous Having two identical alleles for a gene.
insertion mutation A mutation in which extra nucleotides are added into DNA.
karyotype An organized image or display of an individual’s chromosomes.
Messenger RNA (mRNA) RNA that carries genetic instructions from DNA to ribosomes for protein production.
mitosis Cell division producing two genetically identical daughter cells.
mutation A change in the DNA sequence.
nondisjunction Failure of chromosomes to separate properly during cell division.
nucleotides The building blocks of DNA and RNA consisting of a sugar, phosphate group, and nitrogenous base.
pedigree A chart used to track inheritance of traits through generations.
phenotype The observable physical traits of an organism.
point mutation A mutation affecting a single nucleotide base pair.
polymerase chain reaction A technique used to make many copies of a DNA segment.
protein A molecule made of amino acids that performs cellular functions and determines traits.
protein synthesis The process of making proteins using DNA instructions through transcription and translation.
punnett square A diagram used to predict genetic trait outcomes from parental crosses.
recessive allele An allele expressed only when two copies are present.
restriction enzyme A protein that cuts DNA at specific sequences.
ribonucleic acid (RNA) A nucleic acid involved in protein synthesis and gene expression.
sex chromosomes Chromosomes that determine biological sex (X and Y in humans).
silent mutation A mutation that does not change the amino acid or protein produced.
Created by: Jaden John
 

 



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