How does the sperm come in contact with frog eggs? 1. The sperm is placed on top of the eggs
2. The sperm is carried through a reproductive system
3. The sperm is carried to eggs via water

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples

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.