لخّصلي

Cell Division There are two forms of cell division that occur in multicellular eukaryotic organisms.During sexual reproduction the two haploid gametes will unite to form a diploid zygote, thus restoring the original diploid chromosome number in the next generation.During mitosis, the chromosome number of the parent cell is preserved in each daughter cell that contains the same number of chromosomes as the original cell.During this division, the number of chromosomes is halved in the sperms or eggs that contain haploid number of chromosomes.

Cell Division
There are two forms of cell division that occur in multicellular eukaryotic organisms. Mitosis is the form of
cell division associated with vegetative growth of the organism. During mitosis, the chromosome number of
the parent cell is preserved in each daughter cell that contains the same number of chromosomes as the
original cell. Meiosis is the form of cell division that is normally associated with sexual reproduction. During
this division, the number of chromosomes is halved in the sperms or eggs that contain haploid number of
chromosomes. During sexual reproduction the two haploid gametes will unite to form a diploid zygote, thus
restoring the original diploid chromosome number in the next generation. Without meiosis, the chromosome
number would be doubled every generation. Meiosis is also important because it produces genetic variation,
the raw material for recombination that leads to evolution.