1. Human Genome Project
... . Further analysis showed one turn of the helix contains ten nucleotides and the diameter of the DNA suggests it is composed of more than one strand. With this information, James Watson and Francis Crick discovered the true structure of DNA in 1953 and created a 3-D model showing the double-helix (Figure3). In the model, nitrogen-containing bases (nucleotides) pair up: adenine pairs ... with thymine (A-T) and guanine pairs with cytosine (G-T). (Figure 4) Watson and Crick noticed that for hydrogen bonds to form properly between the base pairs in DNA, the two nucleotide strands of the DNA ...
- Word Count: 2575
- Approx Pages: 10
- Has Bibliography
- Grade Level: Undergraduate