GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbon
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Oxygen
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Nitrogen or Hydrogen
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Sulfur
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Detailed explanation-1: -The side chain of some amino acids incorporates the element sulfur within their structure and thus, they are observed within protein molecules. The composition of deoxyribonucleic acid does not incorporate this element within its structure.
Detailed explanation-2: -Final answer: Uracil is not found in DNA.
Detailed explanation-3: -So, a phosphate group, cytosine, guanine, and thymine, are all found in DNA. Thus, ribose sugar is present in RNA, not in DNA.
Detailed explanation-4: -Tyrosine is an amino acid. It is not present in DNA. Q. Why does cytosine make pair with guanine and not with adenine?
Detailed explanation-5: -Uracil is not found in DNA as it uracil has more base pair affinity to adenine, guanine and cytosine. Instead thymine is present in DNA.