In a diagram showing transcription bubble, the DNA region actively being copied is:
Correct answer: A. Template strand
- A. Template strand
- B. Coding strand
- C. Okazaki fragment
- D. Introns
Explanation
The transcription bubble is the unwound portion of DNA where RNA is being synthesized. RNA polymerase uses only one strand of DNA as a template to make complementary RNA. The opposite strand (coding strand) has the same base sequence as the mRNA, except U replaces T.
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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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