Need help understanding DNA replication and link to translation & transcription

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Mia 15
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I'm having trouble connecting these processes together. Which order do they happen in? Or are they not connected at all :confused: Especially confused because semi-conservative replication and transcription are quite similar

I'm doing A-level biology, please help !
Last edited by Mia 15; 1 month ago
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DNA replication is when the cell needs to replicate all of the chromosomes before the cell divides in mitosis or meiosis. This is carried out using DNA polymerase, but there are other enzymes such as helicase which breaks the hydrogen bonds between nucleotide pairs, and topoisomerase which unwinds the DNA.

Transcription and translation on the other hand are used in protein production, not in DNA production. Transcription is the process of RNA polymerase producing complementary mRNA from one of the DNA strands. This mRNA leaves the nucleus via nuclear pores, and goes to a ribosome either in the cytoplasm or on the rough endoplasmic reticulum. The ribosome translates the mRNA by matching the codons with complementary anticodons on tRNA, which carry amino acids. The ribosome reads along the mRNA, binds the correct tRNA, and catalyses peptide bonds forming between the amino acids, creating a polypeptide chain.

Basically, DNA replication is unrelated to the other two and produces DNA, while transcription and translation produce proteins/polypeptides.
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Mia 15
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thank you so much!
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