Question

what occurs in anaphase?
multiple choice
the nuclear envelope disappears.
homologous chromosomes line up along the equator of the dividing cell.
the nuclear envelope is constructed.
sister chromatids move to opposite poles.
centrioles move to opposite poles.

Explanation:

• In anaphase of cell division (mitosis or meiosis II), the sister chromatids separate at the centromere and are pulled by spindle fibers to opposite poles of the cell.
• The nuclear envelope disappears in prophase.
• Homologous chromosomes line up along the equator in metaphase I (of meiosis).
• The nuclear envelope is constructed in telophase.
• Centrioles move to opposite poles in prophase.

Answer:

Sister chromatids move to opposite poles.