All cell constituents are duplicated during cell division in a human cell i.e. mitosis and meiosis type of cell division.
During mitosis, a cell duplicates all of its internal parts and formed two identical daughter cells. During duplication, all parts have two sets which is equally distributed into two daughter cells in mitosis type of cell division.
While on the other hand, during meiosis, a cell divides into four daughter cells having haploid chromosomes i.e. half number of chromosomes.
So we can conclude that cell constituents are are duplicated during cell division in a human cell.
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