KEY TERMS

double helix

deoxyribonucleic acid (DNA)

deoxyribose

ribose

purine

pyrimidine

ribonucleic acid (RNA)

nucleoside

nucleotide

B-DNA

A-DNA

Z-DNA

semiconservative replication

DNA polymerase

template

primer

reverse transcriptase

messenger RNA (mRNA)

translation

transfer RNA (tRNA)

ribosomal RNA (rRNA)

transcription

RNA polymerase

promoter site

anticodon

codon

genetic code

ribosome

Shine–Dalgarno sequence

intron

exon

splicing

spliceosomes

exon shuffling

alternative splicing