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Canada (161,650)
Anthropology (373)
ANT203H5 (30)
Chapter 2

CHAPTER 2.docx
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Department
Anthropology
Course
ANT203H5
Professor
Heather Miller
Semester
Summer

Description
Chapter 2 Human GeneticsDNA molecule that provides genetic code for biological structures and also the means to translate this code4 bases held together in double helix strucure by sugar and phophate backbonelong chain of successsive nucelotidesbase chemical unit that make up part of DNA and specify genetic instructionsPurines Adenine Guaninepyrimidimes Thymine cytosinesugarphophatebase nucleotidefree nucleotides have 3 phosophate groupsl when they incorpaorate itno DNA they lose 2adenine and thymine form 2 hydrogen bondsguanine and cytosine form 3 hydrogen bondsphosphate is 5 prime end sugar is 3 prime end 5 and 3DNA is a polymer made of deoxynucleotidesNucleotides are linked together via phosphodiester bondsDNA has a sugar phosphate backboneThe sugar phosphate backbone has a directionality 5 to 3sda The double helixthe two stands are complementary and antiparalle
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