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biology ch. 8
biology ch. 8
10
Biology
10th Grade
04/07/2016

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Term
Anticodon
Definition

a sequence of three nucleotides forming a unit of genetic code in a transfer RNA molecule, corresponding to a complementary codon in messenger RNA.

Term

Bacteriophage

Definition

 a virus that parasitizes a bacterium by infecting it and reproducing inside it.

Term
Base pairing rules
Definition
 constraints imposed by the molecular structure of DNA and RNA on the formation of hydrogen bonds among the four purine and pyrimidine bases such that adenine pairs with thymine or uracil, and guanine pairs with cytosine
Term
Central dogma
Definition

a theory in genetics and molecular biology subject to several exceptions that genetic information is coded in self-replicating DNA and undergoes unidirectional transfer to messenger RNAs in transcription which act as templates for protein synthesis in translation.

Term
Codon
Definition

a sequence of three nucleotides that together form a unit of genetic code in a DNA or RNA molecule.

Term
DNA polymerase
Definition
is a type of enzyme that is responsible for forming new copies of DNA, in the form of nucleic acid molecules.
Term
Exon
Definition
a segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence.
Term
Frameshift mutation
Definition

is a genetic mutation caused by indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three.

Term
Intron
Definition

a segment of a DNA or RNA molecule that does not code for proteins and interrupts the sequence of genes.

Term
Messenger RNA
Definition
the form of RNA in which genetic information transcribed from DNA as a sequence of bases is transferred to a ribosome.
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