Question

Dna replication project with need, observation , conclusion

Answer 1

Meselson and Stahl tested the hypothesis of DNA replication. They cultured bacteria in a 15N medium. 15N is a heavy isotope of nitrogen so the DNA synthesized is of heavy density. ... After two replication cycles, two bands of DNA were seen, one of intermediate density and one of light density.

Answer 2

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DNA Replication➫ The process by which DNA makes a copy of itself during cell division.

❱ DNA Replication begins at specific places in the genome called origins.

❱ The enzyme in charge of this is called a helicase because it unwinds the helix.

❱ The point where the double helix is opened up and the DNA is copied is called a Replication fork.

❱ DNA replication need to occur because existing cells divide to produce new cells.

❱ Each cell need a full instruction manual to operate properly.

❱ DNA needs to be copied before cell division so that each new cell receives a full set of instructions.

❱ DNA Replication Steps are:-

♦ The Separation of DNA Strands.

♦ Replication Fork Formation.

♦ Binding of Bases to Each Strand.

♦ The Termination of the Replication Process.

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