During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase. During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei.
Organ system? Because that’s where all your digestive system works at
Yes, there is DNA in food, unless it is inorganic, then the answer would be no e.g. if your food was a rock
Osteichthyes or Ray-finned fish