Answer
Verified
387.6k+ views
Hint: All the types of RNA polymerase transcribes different RNAs. One of the types of RNA polymerase transcribes hnRNAs be it I, II or III.
Complete answer:
Transcription is the process by which the information stored in the strand of DNA gets copied into a new molecule of mRNA which is messenger RNA. It is the first step of DNA based gene expression where a particular segment of DNA is copied into RNA which is done with the help of RNA polymerase. Both the nucleic acids use base pairs of nucleotides as the complementary language.
In eukaryotes, transcription is achieved by the different types of RNA polymerase which are RNA polymerase I, II and III. All these contain different subunits and the classes of RNA too.
- RNA poly I transcribes the rRNAs which is ribosomal RNA
- RNA poly II transcribes ribosomes where hnRNAs are formed which is heterogeneous nuclear RNAs
- RNA poly III transcribes snRNA which is small nuclear RNAs
> If we look at the statement (i), it says RNA poly I transcribes rRNA and from the above explanation it is clear that this statement is correct which is (i)
> Now the statement (ii) says that RNA poly II transcribes snRNAs but in actual as per the explanation given above it transcribes hnRNAs. So statement (ii) is incorrect.
> Statement (iii) says that RNA poly III transcribes hnRNAs but it transcribes snRNAs and therefore this statement (iii) is also incorrect.
> Statement (iv) says that RNA poly II transcribes hnRNAs and this statement is the correct one as it transcribes hnRNAs.
Hence, The correct answer is option (D).
Note: As per all the types of RNA polymerase and which RNA it transcribes only the statement (i) and (iv) is the correct one. If you know about all the types of polymerase and their transcription then you can easily crack this question and you can't go wrong in any RNA polymerase related question.
Complete answer:
Transcription is the process by which the information stored in the strand of DNA gets copied into a new molecule of mRNA which is messenger RNA. It is the first step of DNA based gene expression where a particular segment of DNA is copied into RNA which is done with the help of RNA polymerase. Both the nucleic acids use base pairs of nucleotides as the complementary language.
In eukaryotes, transcription is achieved by the different types of RNA polymerase which are RNA polymerase I, II and III. All these contain different subunits and the classes of RNA too.
- RNA poly I transcribes the rRNAs which is ribosomal RNA
- RNA poly II transcribes ribosomes where hnRNAs are formed which is heterogeneous nuclear RNAs
- RNA poly III transcribes snRNA which is small nuclear RNAs
> If we look at the statement (i), it says RNA poly I transcribes rRNA and from the above explanation it is clear that this statement is correct which is (i)
> Now the statement (ii) says that RNA poly II transcribes snRNAs but in actual as per the explanation given above it transcribes hnRNAs. So statement (ii) is incorrect.
> Statement (iii) says that RNA poly III transcribes hnRNAs but it transcribes snRNAs and therefore this statement (iii) is also incorrect.
> Statement (iv) says that RNA poly II transcribes hnRNAs and this statement is the correct one as it transcribes hnRNAs.
Hence, The correct answer is option (D).
Note: As per all the types of RNA polymerase and which RNA it transcribes only the statement (i) and (iv) is the correct one. If you know about all the types of polymerase and their transcription then you can easily crack this question and you can't go wrong in any RNA polymerase related question.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
Using the following information to help you answer class 12 chemistry CBSE
Which of the following would not be a valid reason class 11 biology CBSE
Why should electric field lines never cross each other class 12 physics CBSE
Trending doubts
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Which type of bond is stronger ionic or covalent class 12 chemistry CBSE
What organs are located on the left side of your body class 11 biology CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Difference Between Plant Cell and Animal Cell
How fast is 60 miles per hour in kilometres per ho class 10 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
When people say No pun intended what does that mea class 8 english CBSE