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Notes explaining the structure of DNA, replication process of DNA, how mutations work in DNA, and the Polymerase chain reaction process
Date Submitted: 09/09/2006 23:58:10
Category: / Science & Technology / Chemistry
Length: 3 pages (825 words)
Category: / Science & Technology / Chemistry
Length: 3 pages (825 words)
-DNA is a polymer of nucleotides
-Each nucleotide consists of a nitrogenous base, a sugar, and a phosphate group
-The sugar in DNA is a pentose sugar called deoxyribose
-The different kinds of bases are adenine, thymine, guanine, and cytosine
-In DNA, there is a 1:1 ratio of nucleotide bases: number of adenine = number of thymine and number of guanine = number of cytosine
-DNA consists of 2 strands in a shape called a double helix
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…DNA for use in evidence of crimes
-Gel electrophoresis (DNA fingerprinting) separates DNA on the basis of the rate of movement through a gel under the influence of an electric field
<Tab/>-Restriction enzymes cut the DNA up into restriction fragments
<Tab/>-Each band consists of DNA molecules/fragments of the same length
<Tab/>-Used for paternity, crime scenes, or isolating certain genes
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