Tina and Linda want to start a family. Linda has a genetic condition that she would prefer not to pass on to their child. Therefore, Tina will be the biological mother, but she had her fallopian tubes tied and now is unable to get pregnant. They have opted for a procedure in which Tina's ova are removed from her ovaries and a man's sperm are used to fertilize the ova in a laboratory. This method of fertilization is known as . Group of answer choices

The hershey and chase experiments involved the preparation of two different types of radioactively labeled phage. which of the following best explains why two preparations were required? a. the bacteriophage used in the experiments was a t2 phage. b. it was necessary that each of the two phage components, dna and protein, be identifiable upon recovery at the end of the experiment. c. each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope. d. establishing the identity of the genetic material required observation of two phage generations.