2. What is the primary reason that humans settled in temperate regions? human settlements are evenly distributed around the world
farming is easier in these climates
humans have better adaptations for temperate climates
the weather is more predictable in these climates

During binary fission, what events must occur before the cell splits into two new cells?

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.

List the types of enzymes an their function. bio 101