1905-2002 By Erwin chargaff It states that in all DNA, Pyrimidines and Purines must have 1:1 Adenine : Thymine Cytosine : Guanine i.e., the amount of adenine = amount of thymine similarly, the amount of cytosine = amount of guanine. It indicated that DNA is symmetrical. (A)Double bond (T) and (C) triple bond (G) realme …
Deoxyribonucleic acid DNA as a genetic material First extracted from, nuclei in 1870 Named “nuclein” Chemical analysis: determined DNA as a weal acid and rich in Phosphorous Furthered named DNA, as lot of information provided by name: Deoxyribonucleic acid Contains sugar (deoxyribose) Weakly acidic Found in Nucleus Only four different subunits makes up DNA Chromosome …