1) How is light important for controlling the cycle in Drosophila but not in control for cells in the cycle in Mammalia? 2) How can you explain the function of light in the cycle of mammalian cell?

1) How is light important for controlling the cycle in Drosophila but not in control for cells in the
cycle in Mammalia?
Answer
Light consists of many parts such as visible and invisible. The maximum studies have been
performed on its UV component as; it might reflect a number of impacts on cell that is known as
structural as well as functional part of an organism.
But, such effects may vary according to the organisms for instance; longer wavelength light,
(340 nm) may introduce mutation...