For two populations to evolve into two species that look different, what must happen
a. extinction
b. competition
c. continental drift
d. reproductive isolation

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

Pink fur (p) is dominant to purple fur (p) in hamsters. two heterozygous pink hamsters are crossed. what is the probability that these two parents will have an offspring with purple fur? 2/4, 1/2 or 50% 1/4 or 25% 3/4 or 75% 4/4 or 100% there is no chance for this type of offspring

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these