BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This person came up with:A=T, G=C, This American biochemist discovered a quantity pattern in the DNA, came up with a rule named after him, Watson and Crick’s structure supports this person’s findings
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Created the first 3D model of the DNA double-helix
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Determined that DNA was our genetic code
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None of the above
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Detailed explanation-1: -Erwin Chargaff found that in DNA, the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) are equal. This parity is obvious in the final DNA structure.
Detailed explanation-2: -Chargaff’s rules The first and best known achievement was to show that in natural DNA the number of guanine units equals the number of cytosine units and the number of adenine units equals the number of thymine units.
Detailed explanation-3: -Chargaff adapted the paper chromatography technique to separate out the four nitrogenous bases of DNA. The four bases of DNA-adenine, guanine, thymine and cytosine-are the parts of the molecule that do the actual coding of our genes.
Detailed explanation-4: -Erwin Chargaff’s research paved the way for the discoveries of DNA’s structure and its method of replication. His observation that DNA varies from species to species made it highly credible that DNA was genetic material.