mRNA is synthesized by:
Correct answer: B. RNA Polymerase II
- A. RNA Polymerase I
- B. RNA Polymerase II
- C. RNA Polymerase III
- D. None of the above
Explanation
mRNA (messenger RNA) is synthesized by RNA polymerase II in eukaryotic cells. RNA polymerase II is responsible for transcribing protein-coding genes into pre-mRNA molecules, which undergo further processing (such as splicing and polyadenylation) to become mature mRNA molecules.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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