Save
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

Vocabulary-biology

Keystone exams

TermDefinition
Allele A variation of a gene’s nucleotide sequence (an alternative form of a gene).
Cell cycle The series of events that take place in a cell leading to its division and duplication. The main phases of the cell cycle are interphase, nuclear division , and cytokinesis.
Chromosomes A single piece of coiled dna and associated proteins found in linear forms in the nucleus of eukaryotic cells and circular forms in the cytoplasm of prokaryotic cells; contains genes that encode traits. Each species has a characteristic number of chromoso
Cloning A process in which a cell, cell product, or organism is copied from and original source.
Co-dominance A pattern of inheritance in which the phenotype effect of two alleles in a heterozygous genotype express each phenotype of each allele fully and equally; a phenotype which would not be expressed in any other genotypic combination.
Crossing over An exchange of genetic material between homologous chromosomes during anaphase 1 of meiosis; contributes to the genetic variability in gametes and ultimately in offspring.
Cytokinesis The final phase of a cell cycle resulting in the division of the cytoplasm.
DNA replication The process in which dna makes a duplicate copy of itself.
Dominant inheritance A pattern of inheritance in which the phenotypic effect of one allele is expressed within a homozygous and heterozygous genotype.
Gamete A specialized cell( egg or sperm) used in sexual reproduction containing half the normal number of chromosomes of a somatic cell.
Gene A sequence of nucleotides composing a segment of dna that provides a blueprint for a specific hereditary trait.
Gene recombination A natural process in which a nuclei acid molecule( usually dna but can be rna) is broken and then joined to a different molecule; a result of crossing over.
Gene splicing A type of gene recombination in which the dna is intentionally broken and recombined using laboratory techniques.
Gene therapy The intentional insertion, alteration, or deletion of genes within an individual’s cells and tissues for the purpose of treating a disease.
Genetic engineering A technology that includes the process of manipulating or altering the genetic material of a cell resulting in desirable functions or outcomes that would not occur naturally.
Genetically modified organism An organism whose genetic material has been altered through some genetic engineering technology or technique.
Genetics The scientific study of inheritance.
Genotype The genetic composition of an organism with reference to a single trait, a set of traits, or the entire complement of traits of an organism.
Incomplete dominance A pattern of inheritance in which two alleles, inherited from the parents, are neither dominant nor recessive. The resulting offspring have a phenotype that is a blending of the parental traits.
Inheritance The process in which genetic material is passed from parents to their offspring.
Interphase The longest- lasting phase of the cell cycle in which a cell performs the majority of its functions, such as preparing for nuclear division and cytokinesis.
Meiosis A two-phase nuclear division that results in the eventual production of gametes with half the normal number of chromosomes.
Mitosis A nuclear division resulting in the production of two somatic cells having the same genetic complement as the original cell.
Multiple alleles More than two forms of a gene controlling the expression of a trait.
Nondisjuction The process in which sister chromatids fail to separate during and after mitosis or meiosis.
Phenotype The observable expression of a genotype.
Polygenic trait A trait in which the phenotype is controlled by two or more genes at different loci on different chromosomes.
Recessive inheritance A pattern of inheritance in which the phenotype effect of one allele is only expressed within a homozygous genotype. In a heterozygous Condition with a dominant allele, it is not expressed in the phenotype.
Semiconservative replication The process in which dna molecule uncoils and separate into two strands. Each original strand is constructed, resulting in two dna molecules identical to the original dna molecule.
Sex-linked trait A trait, associated with a gene that is carried by either the male or female parent ( e.g., color blindness and sickle-cell anemia).
Created by: Svcepeda
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