The following genes have been mapped from left to right on the X chromosome of Drosophila using recombination frequency. The numbers indicate the map distance between genes in cM: Yellow (1.4) White (19.6) Singed The gene Ruby exhibits 7.5% recombination with Yellow and 13.5% recombination with Singed. What is the location of Ruby with respect to the White gene

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.