Consider statements about genetics: 1. DNA is the genetic material in most organisms. 2. RNA is the genetic material in some viruses. 3. Proteins are the genetic material in all cells. Which are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 1 and 2 only
D. 1, 2 and 3
Answer: Option C
Solution (By JKExamLibrary)
DNA (deoxyribonucleic acid) is the universal genetic material in all cellular organisms (prokaryotes and eukaryotes) and many viruses, storing hereditary information. Some viruses, known as RNA viruses (like HIV, influenza, and TMV), use RNA (ribonucleic acid) as their genetic material instead of DNA. Proteins are the products of gene expression and perform various cellular functions, but they are never the genetic material in any cell or virus. Thus, statements 1 and 2 are correct.
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