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Q. Explain all three process of DNA replication ?

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Answer 1

✴️DNA Replication ✴️

--> DNA replication is the process of copying a double-stranded DNA molecule . Both strands serves as templates for the reproduction of the opposite strand.

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The three processes of DNA elongation are :-

1) Initiation

2) Elongation

3) Termination

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1) Initiation------>During initiation, proteins bind to the origin of replication while helicase unwind the DNA helix and two replication forks are formed at the origin of replication.

2) Elongation-------->During elongation, a primer sequence is added with complementary RNA nucleotides, which are then placed by DNA nucleotides.

3) Termination-------->Termination of DNA replication occurs when two replication forks meet on the same stretch of DNA, during which events occur.

Answer 2

the three process of DNA are as follow :-

1. initation :- Replication begins at a location on the double helix known as "oriC" to which certain interior proteins bind and tigger unwinding. enzymes known as helicases unwind the double helix by breaking the hydrogen bonds between complementary base pairs, while other proteins keep the single strands frome rejoining. the topoisomeras protiens surround the unzipping strands and relax the twisting that might damaged the unwinding DNA.
2. elongation :- with the primer as the starting point for the leading strands, a new DNA strand grows one base at time. existing strand is a template for the new strand. for example if the next base on the existing strand is an A, the new strand receives T. the enzymes polymerase control elongation which can occur only in the leading direction.
3. termination :- after elongation is complete, two new helices have replaced the original helix. during termination, the last primer sequence must be removedfrom the end of the lagging strand. this last portion of lagging strand is the telomere section, containing a repeating non-coding sequence of bases. enzymes snip off the telomere at the end of each replication, leading to shorter strands after each cycle. finally enzymes called nucleases "proofread" the new double helix structures and remove misspaired bases. DNA polymerase then fills in the gaps created by the excised bases.

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