The stage of cell division when this alignment of the chromosomes occurs is called metaphase. A microtubule is about 25 nanometers in diameter, or roughly 4,000 times smaller than the width of a human ...

Mitosis is conventionally divided into five stages known as prophase, prometaphase, metaphase, anaphase, and telophase. While mitosis is taking place, there is no cell growth and all of the ...

How might spindle fibers spanning the length of the cell be produced? How would this process differ if the centrosomes were not on opposite poles of the cell? Metaphase: The hallmark of this phase is ...

The chromosomes line up on the metaphase plate, an imaginary line that divides the cell in two. Also, the fibers begin to tug each chromosome toward opposite ends of the cell. Same as in mitosis ...

The membrane around the nucleus disappears. Metaphase Chromosomes and their copies line up in the middle of the cell. Anaphase Chromosomes and their copies are pulled to different ends of the cell.

Take the evolution of sex, for instance. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction ...