Assume you stain Bacillus by applying malachite green with heat and then counterstain with safranin. Through the microscope, the green structures are
A) cell walls
B) capsules
C) endospores
D) flagella
E) impossible to identify

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.