| A | B |
|---|
| nitrogenous base | a carbon ring structure that contains one or more atoms of nitrogen. |
| double helix | two strands of DNA in the chromosonmes is copied |
| DNA replication | when the DNA in the chromosomes is copies |
| messenger RNA | brings instructions from DNA in the nucleus to the cytoplasm. |
| ribosomal RNA | uses it instructions to assemble the amino acids in the correct order. |
| transfer RNA | delivers amino acids to the ribosomes to be assembled into a protein. |
| transcription RNA | the enzumes make an RNA copy of the oportion of a DNA strand. |
| codon | is a one of three nitrogenous bases that represents an amino acid |
| translation | is converting the information in a swquence of nitrogenous bases into a sequence of amino acids in protein. |
| mutation | is any change in a DNA sequence. |
| point mutation | any change in a single base pair in DNA |
| frameshipt mutation | a mutation in which a single base is added or delted from DNA |
| CHROMOSOMAL MUTATION | the structural changes in the chromosomes |
| mutagen | any agent that can cause a change in DNA |
