THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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sugar & base
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sugar & phosphate
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base & phosphate
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phosphate & phosphate
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Detailed explanation-1: -DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases–adenine (A), cytosine (C), guanine (G), or thymine (T).
Detailed explanation-2: -The backbone of a DNA is made up of repeating units of deoxyribose sugar, nitrogenous base and phosphate group which occur alternately. The phosphate group attaches to the-OH group at the 5’ carbon of the deoxyribose sugar through a phosphodiester linkage.
Detailed explanation-3: -The sugar in DNA is deoxyribose. The pyrimidines are cytosine (C) and thymine (T); the purines are guanine (G) and adenine (A).
Detailed explanation-4: -The backbone of the DNA is composed of deoxyribose sugar and a phosphate molecule. The four types of nitrogen bases present in a nucleotide are adenine (A), thymine (T), guanine (G), and cytosine (C). The order of these bases determines the DNA’s instructions or genetic code.