The Watson and Crick model of DNA, introduced by James Watson and Francis Crick in 1953, describes the structure of DNA as a double helix. This model showed that DNA is made up of two strands that twist around each other like a spiral staircase. Each strand consists of nucleotides, which are made of a sugar, a phosphate group, and a nitrogenous base.
Also See: Linkage And Crossing Over PPT
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The bases pair in a specific way: adenine with thymine, and guanine with cytosine, held together by hydrogen bonds. This complementary base pairing is key to DNA replication, where the genetic information is copied for cell division.
Also See: Transposons PPT
Table of Content for Watson And Crick Model Of Dna PPT
- Introduction
- Historical Background
- Structure of DNA
- Base Pairing
- Double Helix
- Replication
- Significance of the Model
- Conclusion
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