Provide at least 1 example of a mutation that does not have a negative effect on
the individual.
PLEASE HELP ME

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

This is a biological reaction due to a stimulus. i need this quickly !

Can someone me i need the answer and don’t understand?