NEETZoologyMolecular Basis of Inheritance
Read the following statements regarding the properties of genetic material: (i) The 2'-OH group present at every nucleotide in RNA makes it reactive and easily degradable. (ii) RNA is known to be catalytic, hence reactive. (iii) The presence of thymine at the place of uracil confers additional stability to DNA. (iv) Due to its double-stranded nature, DNA mutates at a much faster rate than RNA. How many of the above s
Options
- AFour
- BThree
- CTwo
- DOne
Correct answer
B. Three
Step-by-step solution
Statement (i) is correct as the 2'-OH group in the ribose sugar of every nucleotide makes RNA labile and easily degradable. Statement (ii) is correct because RNA can act as a catalyst (ribozyme), which makes it more reactive than DNA. Statement (iii) is correct as the presence of thymine instead of uracil provides additional chemical stability to DNA. Statement (iv) is incorrect because DNA is structurally more stable and chemically less reactive than RNA; therefore, RNA mutates at a faster rate, not DNA. DNA's dou