The chromosomes are depicted ( by rearranging a photomicrograph ) in a standard format known as a karyogram or idiogram : in pairs , ordered by size and position of centromere for chromosomes of the same size .
The chromosomes are depicted ( by rearranging a microphotograph ) in a standard format known as a karyogram or idiogram : in pairs , ordered by size and position of centromere for chromosomes of the same size .