What is happening during the stage of meiosis shown below?
o
a. the spindle fibers are pushing the sister chromatids toward the
center of the cells.
o
b. the spindle fibers are pulling the sister chromatids apart to
opposite sides of the cells.
o
c. the spindle fibers are pushing the tetrads toward the center of the
cells,
o
d. the spindle fibers are pulling the tetrads apart to opposite sides of
the cells.

B. The spindle fibers are pulling the sister chromatids apart to oppositesides of the cells.

Explanation:

In meiosis, a single cell is dividing two times and forming four different haploid cells (n). Meiosis will produce gametes( sperms and eggs) through sexual reproduction. Meiosis has two cell division stages. In meiosis one, which is the first round of cell division where the        homologous chromosomes ( they are pair of chromosome from the parents but each allele are different since both are coming from mother and father) but  are separating each other.In meiosis two, which is the second round of cell division where the sister chromatids ( Identical copies of chromatids formed after the DNA replication) get separate each other by spindle fibres).

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.