There are six phases of mitosis (a way which allows cell to reproduce itself so that organisms can grow). In this process, DNA is coiled into chromosomes. In the second phase, the spindle fibers attach themselves to centromere - centromere is a part of chromosome linking two sister chromatids (2 chromsatids make one chromosome). In the fourth phase, these spindle fibers shorten themselves and the sister chromatids are physically separated by the action. This way the two diploid daughter cells produced in mitosis have 46 chromosomes each.
Two chromosomes attach to each spindle fiber during metaphase I of meiosis.
spindle fiber
If the spindle fiber were disrupted, the duplicated chromosomes would not be separated.
spindle apparatus
The phase where each chromosome is connected to a spindle fiber is called metaphase. During metaphase, the chromosomes align at the metaphase plate at the center of the cell, and each chromosome is attached to spindle fibers emanating from opposite poles of the cell.
chromosomes
the kinetochore
intrafusal fiber muscles embedded with the spindle along side the normal muscle fibers (extrafusal fiber muscles)
Two chromosomes attach to each spindle fiber during metaphase I of meiosis.
spindle fiber
If the spindle fiber were disrupted, the duplicated chromosomes would not be separated.
at anaphase 2. IN matephase 1 the spindle fiber attach to one spindle fiber. in anaphase 2 they attach to two spindle fibers then divide and move to opposite ends of the cell. now each is an individual chromosone
spindle apparatus
They divide at Anaphase two. In Matephase one the spindle fibers attach to one spindle fiber.
Spindle fiber :d
Mtoc... Microtubule organizing center....
The phase where each chromosome is connected to a spindle fiber is called metaphase. During metaphase, the chromosomes align at the metaphase plate at the center of the cell, and each chromosome is attached to spindle fibers emanating from opposite poles of the cell.