Molecular Biology

Molecular Genetics


DNA is deoxyribonucleic acid, the template for genetic instructions. DNA undergoes replication into complementary strands of DNA for reproduction, and transcription into RNA before translation into proteins. The nucleotide bases, adenine, thymine, cytosine, and guanine are coupled inside the double helix, while the ribose backbone curves around the edge. (click images to enlarge)

Right - nucleobases form complementary pairs through hydrogen bonding. Adenine and thymine are coupled (broken lines), and cytosine couples with guanine.

grey - carbon / white - hydrogen / blue - nitrogen / red – oxygen / green - phosphorus

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