Which best describes the first step in genetic engineering

In which direction is the pacific plate moving in relation to the north american plate?

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.

Which statements best describe the atoms of the gas neon? check all that apply