Question

Which of the given RNA carries genetic information transcribed from DNA?

• A. mRNA
• B. tRNA
• C. rRNA
• D. snRNA

Answer 1

The correct option is A

mRNA

The correct option is A.

Explanation of the correct option:

1. Messenger ribonucleic acid is a single-stranded RNA molecule that matches a gene's genetic sequence and is read by a ribosome during the protein synthesis process.
2. The genetic information for protein production is translated from DNA into mRNA.
3. During the translation process, the genetic code found in mRNA is converted into amino acids for a polypeptide chain.

Explanation of the incorrect option:

Option B:

1. A form of RNA molecule called transfer ribonucleic acid (tRNA) aids in the translation of a messenger RNA (mRNA) sequence into a protein.
2. tRNAs play a role in translation, which is the process of making a protein from an mRNA molecule, by binding to certain locations in the ribosome.

Option C:

1. Ribosomal RNA (rRNA) is a molecule found in cells that is part of the ribosome, a protein-synthesizing organelle that is exported to the cytoplasm to aid in the translation of information from messenger RNA (mRNA) into protein.
2. The three major types of RNA found in cells are rRNA, mRNA, and transfer RNA (tRNA).

Option D:

1. Small nuclear RNAs (snRNAs) are essential spliceosome components that catalyze pre-mRNA splicing.
2. In the cell nucleus, snRNAs combine with a variety of proteins to create RNA-protein complexes known as small nuclear ribonucleoproteins (snRNPs).

Final answer: mRNA carries genetic information transcribed from DNA.