You have a plant with yellow seeds, which express a dominant phenotype. how would you determine the plant's genotype? . . conduct a punnett square with a purebred recessive plant.. conduct a test cross with a purebred recessive plant.. conduct a test cross with a purebred dominant plant.. conduct a test cross with a hybrid plant.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms