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By duplicating chromosomes

By ensuring daughter cells are identical

Through crossing over and independent assortment

By producing cells with the same number of chromosomes as the parent cell

Sister chromatids separate and move to opposite poles of the cell.

The cell divides into two daughter cells.

The chromosomes replicate.

Homologous chromosomes separate and move to opposite poles of the cell.

They condense again in haploid cells

They replicate

They align at the equatorial plane

They separate into sister chromatids

Formation of two diploid cells

Formation of four haploid cells

Formation of one diploid cell

No cell division occurs

They originate in the mesoderm

They originate in the epiblast

They originate in the yolk sac

They originate in the dorsal mesentery

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