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Q: DNA stands for –––––– .
  • A. Di Nucleic Acid
  • B. Deoxy Nucleic Acid
  • C. Diribonucleic Acid
  • D. Deoxyribonucleic Acid
Correct Answer: Option D - DNA stands for Deoxyribonucleic acid, which is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic material for the development, functioning, growth and reproduction of all known organism and many viruses. DNA was first isolated by the swiss physician Friedrich Miescher in 1869 and the double stranded DNA was discovered by Watson and Crick in 1953. DNA strands are known as polynucleotides and they are composed of simpler monomeric unit called nucleotide. Each nucleotide composed of one of four nitrogen containing nucleobases i.e. Cytosine (C), Guanine (G), Adenine (A) and Thymine (T).
D. DNA stands for Deoxyribonucleic acid, which is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic material for the development, functioning, growth and reproduction of all known organism and many viruses. DNA was first isolated by the swiss physician Friedrich Miescher in 1869 and the double stranded DNA was discovered by Watson and Crick in 1953. DNA strands are known as polynucleotides and they are composed of simpler monomeric unit called nucleotide. Each nucleotide composed of one of four nitrogen containing nucleobases i.e. Cytosine (C), Guanine (G), Adenine (A) and Thymine (T).

Explanations:

DNA stands for Deoxyribonucleic acid, which is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic material for the development, functioning, growth and reproduction of all known organism and many viruses. DNA was first isolated by the swiss physician Friedrich Miescher in 1869 and the double stranded DNA was discovered by Watson and Crick in 1953. DNA strands are known as polynucleotides and they are composed of simpler monomeric unit called nucleotide. Each nucleotide composed of one of four nitrogen containing nucleobases i.e. Cytosine (C), Guanine (G), Adenine (A) and Thymine (T).