Are the sister chromatids at the start of meiosis II identical?

: Are the sister chromatids at the start of meiosis II identical?
When the homologous chromosomes “cross over” in metaphase I, do the sister chromatids of each chromosome cross over in the same way? I’m guessing not.

Answers and Views:

Answer by Paul Mingo
No, sister chromatids are identical replications of each other that during mitosis would normally split to form 2 cells.

Crossing over of sister chromatids would not be useful as the contain the same information.
Homologous chromosomes are the two different chromosome 1’s or chromosome 2’s that we have. They will all contain the same genes but different alleles.

During meiosis the crossing over of homologous chromosomes introduces new combinations into the population which is what allows for varation among the population leading to natural selection.