in one species of plant, the flower petal are normally purple if both enzyme a and enzyme b are produced. if a mutation occurred that stopped the production of a, but not enzyme b, what color flower petals would be produced?

Draw the structure of dna nucleotide with adenine as nitrogenous base

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

About how much of the cell mass is watet