DNA as an acidic substance present in nucleus was first identified by _______ in 1869; he named it as _______.
A
Meischer, nuclein
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B
Watson and Crick, DNA
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C
Chargaff, nuclein
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D
Wilkins and Franklin, double helix
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Solution
The correct option is A Meischer, nuclein DNA was first discovered by Meischer in the nucleus of pus cells in 1869. DNA has acidic nature due to phosphate groups. Meischer called it nuclein as it is present inside the nucleus.
Watson and Crick gave the double helical structure of DNA.
Chargaff proposed the Chargaff's rule which states that the amount of A=T and amount of G=C.
Wilkins and Franklin obtained images of DNA using X ray crystallography.