Final answer:
Upon completion of meiosis II, four haploid genetically unique daughter cells are formed, each with half the number of chromosomes as the original diploid parent cell.
Step-by-step explanation:
The number of different cells formed upon the completion of meiosis II is 4. During meiosis, a single diploid parent cell undergoes two rounds of cell division resulting in four haploid daughter cells. These cells are genetically unique due to the processes that occur during meiosis such as crossing over during prophase I and the random assortment of chromosomes during metaphase I.
In humans, for example, if a cell with a diploid number of 46 chromosomes enters meiosis, it would create four daughter cells, each with 23 chromosomes. These haploid cells become gametes, such as sperm or egg cells in animals.