9. flower a blooms in june while flower b, a close relative of a, blooms in august. a researcher is raising a population of flower b in a controlled growth chamber. over time the researcher manipulated the day length in the growth chamber and eventually manages to get some individuals of flower b to bloom in june. the researcher finds that she can cross the flower b individuals with flower a individuals and they produce viable, fertile offspring. what can she conclude about flower a and flower b? the fact that b's blooming time can be manipulated suggests it should not be regarded as a species distinct from a. a and b aren't a good example of separate species. a and b are not pre-zygotically isolated from one another. a and b are temporally reproductively isolated from each other. a and b are genetically incompatible.