alternative splicing

codon

In mRNA, a nucleotide base triplet that codes for an amino acid or stop signal during translation.

epistasis

Interacting products of two or more gene pairs influence a trait.

ionizing radiation

Radiation with enough energy to eject electrons from atoms

exon

Segment of RNA that is not excised during transcript processing interspersed with introns

intron

Segment that is excised from RNA during transcript processing intervenes between exons

anticodon

Set of three nucleotide bases in a tRNA base-pairs with mRNA codon

base-pair substitution

Type of mutation a single base-pair change.

genetic code

code Set of sixty-four mRNA codons, each of which specifies an amino acid or stop signal in translation.

alternative splicing

mRNA processing event in which some exons are removed or joined in various combinations. By this process, one gene can specify two or more slightly different proteins.

insertion

mutation by which one or more bases are introduced into DNA.