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4 Cards in this Set
- Front
- Back
Some organisms have additional DNA without added complexity, what is this due to?
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interrupted genes
repeated genes gene families pseudogenes |
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what are interrupted genes?
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most genes in higher eukaryotes are interrupted by introns- non coding sequr=ences of DNA removed from the mRNA copy during splicing
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what are the exceptions to having interrupted genes?
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histones
some interferons some adenovirus herpes virus genes |
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what is the evidence for the presence of introns?
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cDNA synthesis from mRNA, restriction digests different when compared to the gene
R-loop formation when cDNA is hybridised to gene S1 nuclease mapping experiments |