DNA polymerase III adds nucleotides to DNA strand, replication always proceeds from:
Correct answer: B. 5' → 3
- A. 3' → 5'
- B. 5' → 3
- C. Sometime "3' → 5' & "5' → 3' "
- D. None of the given options
Explanation
DNA replication occurs in the 5' to 3' direction. DNA polymerase can only add nucleotides the 3' -OH group of the growing DNA strand, this is why DNA replication occurs only in the 5' to 3' direction.
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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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