Wut does santa's blood tastes like this is not school related but i'll ask something anyway

Submit your report about the four different lobes in the brain. Remember to proofread your work before submitting.200 words!!

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