The cell cycle begins when a cell is and ends when it

The cell cycle is the period of time from the beginning of one cell division to the beginning of the next.

The cell cycle is the series of biological events which cells go through as they grow and divide. The cell cycle has two phases.

(i)                  Mitosis

(ii)                Interphase.

Interphase is broken down to G1 which is growth phase, S which is Dna synthesis phase and G2 which is growth phase again. In Mitosis it consists of anaphase, telophase, prophase, and metaphase.

The cell cycle begins in cytokinesis and ends in Mitosis. Mitosis cannot start before interphase ends because mitosis requires a lot of energy and nutrients to go through the process.Since interphase is the beginning of G1,Dna synthesis and G2 comes to play, it helps to create nutrients and energy.

Let’s have an example of a menstrual cycle. You bleed at the beginning of a cycle not at the end. The first day of your period is the menstrual cycle.

answer; /// i believe the correct answer is (reactants);

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."