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Could be different parts of different taxa

Could be different parts of different taxa - Coding DNA and...

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Could be different parts of different taxa: DNA extracted could be a mixed bag of different dinosaur species and other vertebrate taxa different. Probably not enough taxonomic resolution to determine the species identity of the DNA sequence. This is important: how do you tell whether a chunk of DNA is Tyrannosaurus or Stegosaurus simply based on phylogeny of these sequences if there are no living members of either linage to provide a basis for discrimination Here's where bones are key: species (at least genus?) identify available AND the DNA for the same sample. B. What part and percent of the genome is it?
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Unformatted text preview: Coding DNA and Genome Size, C-value paradox, Numerology: • Genome Size: 1 - 10 x 109 base pairs in a sperm or egg cell (twice that in "diploid" cell) • Number of genes: 50,000 • Average gene length: 1,000 base pairs • Genome is mostly "Junk DNA": 50,000 x 1,000 = 50,000,000 • Coding DNA = "2% of the total genome • Largest fragment recovered: " 300 base pairs of only two kinds of genes • Percent of genome recovered: 1 / 10,000,000th of the genome in base pairs • Percent Coding DNA recovered: 1 / 166,667 Actually less since there are introns...
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