A method of procedure that has characterized natural science since the 17th century of systematic,consisting in systematic observation,measurment,experiment,formulation
Explanation:
Both mitosis and meiosis processes are extremely important because they are the division of chromosomes and without this division reproduction would not occur. Cell division plays an important role in the life cycle of a cell allowing the cell to grow, develop and then reproduce.
I believe the answer is indeterminate embryonic cells. Determinate cleavage or the mosaic cleavage (cell division in early embryos) is in most protostomes. It results in the developmental fate of the cells being set early in the embryo development. A cell can only be indeterminate if it has a complete set of undisturbed animal/vegetal cytoarchitectural features. It is a characteristic of deuterostomes- when the original cell in a deuterostome embryo divides, the two resulting cells can be separated and each one can individually develop into a whole organism.
Meiosis, is a special type of cell division of germ cells in sexually-reproducing organisms used to produce the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each paternal and maternal chromosome.