How do I solve DNA replication problems step by step?
Start from the definition: DNA replication refers to the copying of genetic material before a cell divides. Then unwind the strands, pair complementary bases, then join them with DNA polymerase. Follow that same order every time and most questions on this topic become mechanical rather than intimidating.
How to approach it step by step
Most learners lose marks on DNA replication not because the concept is hard, but because the steps get done out of order. This is exactly where a live 1:1 session helps: LetMeTeach solves one problem visually with you, then hands you a similar one and checks each step as you work, adapting the difficulty to how you answer.
Worked example
A strand reading ATGC is copied as TACG.
The mistake most learners make
Forgetting that replication is semi-conservative, so each new molecule keeps one old strand.
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