Question

Why doesn't cell division result in two cells with half the needed number of chromosomes?

Answer 1

Answer:

This is because the number of chromosomes in a cell always remain fixed or constant.

Explanation:

During cell cycle the DNA of the cell is replicated in the S phase resulting in the formation of 2 daughter DNA molecules which are distributed in the two newly formed daughter cells.Thus chromosome is replicated once per cycle and chromosome number remains fixed in each and every cell.

      According to the question if cell undergo division in two cells  with half the needed number of chromosome then after few cell divisions no chromosome will be left for distribution and the cell will die.