What time of year are carotenoids present in plants?

Where can a dna be found in a prokaryotic cell

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

Involving transcription and translaton. explain the causes and effects of damage to the genetic code.