click below
click below
Normal Size Small Size show me how
Chapter 11
| Term | Definition |
|---|---|
| DNA replication | process in which chromosomal DNA is copied before mitosis or meosis |
| double helix | shape of DNA molecule formed when two twisted DNA strandss are coiled into a springlike structure and held together by hydrogen bonds between the bases |
| nitrogenous base | carbon ring structure found in DNA and RNA that contaibns one or more atoms of nitrogen |
| condon | set of three nitrogenous bases that represents an amino acid |
| messenger RNA | RNA that transport information from DNA in the nucleus to the cell's cytoplasm |
| ribosomal RNA | RNA that makes up ribosomes |
| transcripiton | process in the cell nucleus where enzymes make an RNA copy of a DNA strand |
| transfer RNA | RNA that transports amino acids to the ribosomes to be assembled into proteins |
| translation | process of converting information in RNA into a sequence of amino acids in proteins |
| chromosomal mutation | mutation that occurs at the chromosome level resulting in changes in the genes distribution to gametes during meosis |
| frameshift mutation | mutation that occurs when a single base is added or deleted from DNA |
| mutagen | any agent that can cause a change in DNA |
| mutation | any change or random error in a DNA sequence |
| point mutation | mutation in a DNA sequence |