Chapter 16 The Molecular Basis of Inheritance Sugar?phosphate backbone 5? end Nitrogenous bases Thymine (T) Adenine (A) Cytosine (C) DNA nucleotide Phosphate 3? end Guanine (G) Sugar (deoxyribose) LE 16-8 Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Sugar Sugar Sugar Sugar 5? end 3? end 5? end 3? end Space-filling model Partial chemical structure Hydrogen bond Key features of DNA structure 0.34 nm 3.4 nm 1 nm Structure of DNA The parent molecule has two complementary strands of DNA. Each base is paired by hydrogen bonding with its specific partner, A with T and G with C. The first step in replication is separation of the two DNA strands. The parent molecule has two complementary
Chapter 16 Molecular Basis of Inheritance
Chapter 16 The Molecular Basis of Inheritance Sugar?phosphate backbone 5? end Nitrogenous bases Thymine (T) Adenine (A) Cytosine (C) DNA nucleotide Phosphate 3? end Guanine (G) Sugar (deoxyribose) LE 16-8 Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Sugar Sugar Sugar Sugar 5? end 3? end 5? end 3? end Space-filling model Partial chemical structure Hydrogen bond Key features of DNA structure 0.34 nm 3.4 nm 1 nm Structure of DNA The parent molecule has two complementary strands of DNA. Each base is paired by hydrogen bonding with its specific partner, A with T and G with C. The first step in replication is separation of the two DNA strands. The parent molecule has two complementary
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