Phototropism is the growth of organisms in response to light. The cells on the plant that are farthest from the light have a chemical called auxin that reacts when phototropism occurs. Supplement: ‘Photo-‘ means ‘light’
The square above is based on the eye color of two parents. One of the parents has brown eyes and carries the recessive gene for green eyes (a). What is the probability that a biological child of these parents will have brown eyes?