Anaphase II is essentially the same as mitotic anaphase except that in anaphase II and in mitotic anaphase . crossing over occurs; crossing over does not occur the cells are diploid; the cells are haploid chromosomes line up double file in the middle of the cell; chromosomes line up single file in the middle of the cell the cells are haploid and sister chromatids separate; the cells have the same number of chromosomes as the original cell and sister chromatids separate

Twins are born minutes apart, not a year apart. fraternal twins are no more closely related genetically than ordinary siblings born a year apart. they just happen to be born at the same time. identical twins result from a single fertilized egg dividing and separating early in gestation. although identical twins are more similar to each other than other siblings, there is some research to suggest they are not 100% the same. you and your brother share very similar dna because you have the same parents, and you look the same. i'll bet you resemble one or both of your parents, and likely a grandparent or two as well.