Non-coding DNA
- Created by: iloverevision:)
- Created on: 13-10-19 13:22
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- Non-coding DNA
- in eukaryotes, a lot of nuclear DNA doesn't code for poypeptides
- genes that do code for polypeptides contain sections that do not code for amino acids
- called introns
- can be several within gene & their purpose isn't known for sure
- in eukaryotes - removed during protein synthesis
- so they do not affect amino acid order
- prokaryotic DNA do not have introns
- called introns
- all the bits of a gene that do code for amino acids - exons
- eukaryotic DNA contains regions of multiple repeats outside of genes
- DNA sequences that repeat over and over
- don't code for amino acids
- non-coding multiple repeats
- don't code for amino acids
- DNA sequences that repeat over and over
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