Lecture5BRAE213

Lecture5BRAE213 - mponder@calpoly.edu Lecture 5 More about...

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    Lecture 5 More about DNA  An Overview of Some DNA  Technologies mponder@calpoly.edu
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    DNA The Genetic Code for Life ( Review ) What we know already Length ~2 meters  (the thread and the tennis ball, packing) 23 sets of chromosomes Same DNA in every cell Double helix ~2 nanometers in diameter Exons --- code for proteins Introns --- don’t code for protein ‘junk DNA’ dsDNA [=] double stranded DNA ssDNA [=] single stranded DNA Base-pair, end to end ~1.1nm
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    DNA The Genetic Code for Life ( Review ) What we know already (a quick review) RNA Polymerase reads DNA and produces a  complementary RNA strand DNA Polymerase reads DNA and produces a  complementary DNA strand The Bases are – A = adenine – G = guanine – T = thymine – C = cytosine And we know that ‘G’ goes with ‘C’ and ‘A’ goes with ‘T’  when base-pairing Anything else?
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    The Size of the Human Genome  Relative to other Organisms
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    A Gene Consists of Exons and  Introns, Which Separate One  Another • The colored regions  are genes • The grey areas are  introns • The colored bands  within bands are exons
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    DNA The Genetic Code for Life Some “New” Information Some information on the Human Genome: Nucleotide Pairs 3.2 x 10 9 Number of Genes 30,000 Largest Gene 2.4 x 10 6  pairs Mean Gene Size 27,000 pairs Smallest Number of  Exons per Gene 1 Largest number of Exons  per Gene 178
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    DNA The Genetic Code for Life Some “New” Information Some information on the Human Genome: Largest Exon size 17,106 pairs Mean Exon size 145 Largest Gene 2.4 x 10 6  pairs
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Lecture5BRAE213 - mponder@calpoly.edu Lecture 5 More about...

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