Why are only four amino acids produced by 5 codons? I need this answer ASAP

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

About __ of the mass of the cell is water

Both male and female gametes are created during the process of meiosis. the formation of male gametes is called spermatogenesis. after telophase il of spermatogenesis, there would be are all genetically male gametes created that