When there joined with a male chromosomes and a female chromosomes
Interphase
46 (2n : 46), is the number r of chromosomes in tr daughter cells if the chromosomes in the original parent cell did not duplicate
Chromosomes duplicate themselves during interphase of a cell's life cycle.
when cells break apart and when the chromosomes duplicate
Chromosomes have to be duplicated so that the same amount of DNA will be transferred into the new cells formed by mitosis. The new cells will be mutated if they do not duplicate.
In bacterial Cells they become replicated circles of Dna. In eukaryotic Cells they become Chromosome number 4n.
In Mitosis, the chromosomes duplicate themselves. In Meiosis 1, they duplicate, however they do not duplicate in meiosis 2.
in the interphase
in the interphase
The period during which chromosomes duplicate is called the prophase.
Mitotic cell division
The chromosomes duplicate themselves in Meiosis 1, however they don't duplicate in Meiosis 2.