Cloning is done to copy and learn the DNA.

scientists take the DNA exactly how they do liike humans no diifference

well they see what their peir does just like us humans and they copy it. their is no known fact from where they decided to do what they do. but that is how they learn.

DNA replication produces a copy of the DNA. At the same time the cell in which the DNA is to be found splits into two with a copy of the DNA in each. DNA replication is caused by cell replication during the process of mitosis.

ANSWER: A copy of DNA is necessary in the process of protien synthesis.