Why is dna needed to compare the fossils

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein

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

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the