How does the anaphase stage differ in the two phases of meiosis?
anaphase i separates sister chromatids and anaphase ii separates homologous chromosomes into daughter cells.
anaphase i has homologous chromosomes attached to spindle fibres and anaphase ii involves separation of these homologous chromosomes.
anaphase i separates homologous chromosomes and anaphase ii separates sister chromatids into daughter cells.

The answer is c. Anaphase I separates homologous chromosomes and anaphase II separates sister chromatids into daughter cells.

Meiosis is a cell division which results in the reduction of chromosome number by half (from diploid to haploid) in daughter cells. It consists of meiosis I and meiosis II. 

In anaphase I, the sister chromatids separate from each other to the opposite sides of the cells. In meiosis I there are 46 chromosomes in duplicates which are present as pairs of sister chromatids. When comes to separation, homologous chromosomes separates only, but not sister chromatids. Homologous chromosomes are present only in meiosis I.

 In anaphase II, since the cell is haploid, there are 23 chromosomes in duplicates, which are present as sister chromatids. So, in this phase, sister chromatids are those who separates. 

the sphincter muscles at the end of the digestive tract is the anus.