Genes are made up of ________ ?
Correct answer: C. Polynucleotides
- A. Histones
- B. Lipoproteins
- C. Polynucleotides
- D. Hydrocarbons
Explanation
Genes are made of polynucleotides because DNA is a polymer consisting of many nucleotide units joined in long chains, and genes are segments of that DNA. Histones are common distractors because they bind and organize DNA in chromosomes, but genes are not made of histone proteins.
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About Structure of DNA
DNA structure includes nucleotides made of deoxyribose, phosphate and nitrogenous bases, arranged in two antiparallel polynucleotide strands. Questions cover the double helix, phosphodiester and hydrogen bonds, complementary base pairing between adenine and thymine and between guanine and cytosine, and the significance of major and minor grooves.
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