Water that passes from a plant to its surroundings arrives there by .

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.

Identify the structures ! 20 points

What tool do geneticists use to predict the outcome of genetic crosses? a.karyotype b.punnett square c.centrifuge