What are some facts about the jawless fish in the devonian period

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 of the following shows the results that you would get if you tested beef using the four tests in the gizmo

Por qué crees que los huevos con cáscara se llaman amnióticos?