Which of these are carriers of genetic information?
Correct answer: C. DNA
- A. rRNA
- B. mRNA
- C. DNA
- D. Nucleotides
Explanation
A DNA molecule is a double helix carrying the genetic information of an organism. It encodes all the genetic instructions involved in the growth and development of an individual. Genes, which are fragments of DNA, are basic hereditary units.
This question appeared on the ETEA MDCAT 2006 paper, which you can sit online with every answer explained.
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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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