Question

what structure holds sister chromatids together during? a. nuclear envelope b. centromere c. spindle fibers d. centrioles what role do spindle fibers play in mitosis? a. they form the cell membrane. b. they pull sister chromatids apart to opposite poles of the cell. c. they combine dna into chromosomes. d. they regulate the movement of water into the cell. what is the final result of cytokinesis in mitosis? a. chromosomes become visible. b. spindle fibers begin to form. c. the cell membrane pinches. d. two genetically identical daughter cells are formed.

Explanation:

1. Centromeres hold sister chromatids together during cell - division. Kinetochores are structures on chromatids where spindle fibers attach. Spindle fibers are involved in moving chromosomes during cell division. Centrioles are related to the formation of spindle fibers in animal cells.
2. Spindle fibers pull sister chromatids apart to opposite poles of the cell during cell division, ensuring each new cell gets the correct number of chromosomes.
3. Cytokinesis is the final step of cell division, resulting in the formation of two genetically identical daughter cells.

Answer:

1. a. Centromeres
2. b. They pull sister chromatids apart to opposite poles of the cell
3. d. Two genetically identical daughter cells are formed