Adifferent population of sorghum plants was introduced to a region where turkeys lived. turkeys prefer to feed on short sorghum plants. after a few generations, a change in the height of the sorghum plants was observed in the region. this change in height led to a decrease in the turkey population.
which graph best represents the change observed in the height of the sorghum plants?
graphs go in this order: a, b, c, d, and the beginning

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.