How do u do punnet squares

SO basically a punnet square is a box into 4 parts

Lets say your given heterozygous dominat and heteroygous

recessive .

You would put the "genes" on the left and top:

when  solving you need to Rr together RR together and rr together.

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