Q. 20. That background information did Watson and Crick have made available for developing a model of DNA? What was their contribution?
Watson and Crick had the following information which helped them to develop a model of DNA.
(i) Chargaff's law suggesting A=T and C=G
(ii) Wilkins and Rosalind Franklin's work on DNA crystal's X-ray diffraction studies about DNAs physical structure.
Watson and Crick proposed
(a) Pattern of complementary bases pair
(b) semi-conservative replication
(c) Mutation through tautomerism
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