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Which of the following is not involved in DNA replication?

a) DNA polymerase
b) Helicase
c) Ligase
d) Transcription factor

1 Answer

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Final answer:

The component that is not involved in DNA replication is a transcription factor. Transcription factors are involved in the regulation of gene expression, not the DNA replication process, which utilizes enzymes like DNA polymerase, helicase, and ligase.

Step-by-step explanation:

The component that is not involved in DNA replication is d) Transcription factor. During the process of DNA replication, enzymes like DNA polymerase, helicase, and ligase play crucial roles. DNA polymerase synthesizes new strands of DNA by adding nucleotides. Helicase unwinds the DNA helix at the replication forks, separating the two strands of the double helix, allowing each strand to serve as a template for replication. Ligase is responsible for joining the Okazaki fragments on the lagging strand to create a continuous DNA strand.

However, a transcription factor is not directly involved in DNA replication. Instead, transcription factors are proteins that bind to specific DNA sequences to regulate the transcription of genetic information from DNA to messenger RNA (mRNA). They are crucial in controlling the expression of genes.

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