Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Molecular Basis of Inheritance question

2023 · Q50
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Molecular Basis of Inheritance
  5. /2023 · Q50

Molecular Basis of Inheritance question

2023 · Q50

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1

Given below are two statements :

Statement I : RNA being unstable, mutate at a faster rate.

Statement II : RNA can directly code for synthesis of proteins hence can easily express the characters.

In the light of the above statements, choose the correct answer from the options given below :

  1. A
    Statement I is correct but Statement II is false
  2. B
    Statement I is incorrect but Statement II is true
  3. C
    Both Statement I and Statement II are true
  4. D
    Both Statement I and Statement II are false
View written solutionFree

Correct answer: C

The correct answer is :

Option C : Both Statement I and Statement II are true

Here's why :

Statement I : RNA is indeed generally less stable than DNA and mutates at a faster rate. This is due to the presence of a hydroxyl group on the 2' carbon of RNA, which makes it more susceptible to hydrolysis and other chemical reactions. This increased rate of mutation can be beneficial for RNA viruses, for example, as it allows them to rapidly adapt to new environments or hosts.

Statement II : RNA, particularly mRNA (messenger RNA), can directly code for the synthesis of proteins. In the process of gene expression, DNA is first transcribed into RNA, which is then translated into protein. Hence, changes in the RNA sequence can directly affect the resultant protein and thus easily express different characters.

PreviousNext

More from Molecular Basis of Inheritance

  • Select the correct statements about sickle cell anaemia. (A) There is a change in gene for beta globin. (B) In the beta globin, there is valine in the place of Lysine. (C) It is an example of point mutation. (D) In the normal gene U is…2023 · MCQ
  • Which one of the following acts as an inducer for lac operon ?2023 · MCQ
  • With reference to Hershey and Chase experiments. Select the correct statements. (A) Viruses grown in the presence of radioactive phosphorus contained radioactive DNA. (B) Viruses grown on radioactive sulphur contained radioactive proteins.…2023 · MCQ
  • The salient features of genetic code are : (A) The code is palindromic (B) UGA act as initiator codon (C) The code is unambiguous and specific (D) The code is nearly universal Choose the most appropriate answer from the options given below…2023 · MCQ
  • Unequivocal proof that DNA is the genetic material was first proposed by2023 · MCQ
  • What is the role of RNA polymerase III in the process of transcription in Eukaryotes?2023 · MCQ
  • Expressed Sequence Tags (ESTs) refers to2023 · MCQ
  • Upon exposure to UV radiation, DNA stained with ethidium bromide will show2023 · MCQ