Question

Does splitting of chromosomes longitudinally takes place in Meiosis?

Answer 1

yes, in prophase 1,The two homologous chromosomes split longitudinally, and four chromatids are formed.

Answer 2

First, homologous chromosomes line up together at the metaphase plate (in metaphase 1) and they are segregated. At this stage, one daughter cell gets the paternal chromosome and one gets the maternal chromosome, but each chromosome is still in the replicated form (consisting of two sister chromatids). In metaphase 2, the chromosomes line up single-file on the metaphase plate and the sister chromatids (which are identical to their "sister") are pulled apart by the spindle fibres attaching to their centromeres. This results in the chromosomes being split longitudinally into two sister chromatids, one of which ends up in each of the daughter cells.