Q. A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics?Biology Question Image

 4805  186 NEETNEET 2013Cell Cycle and Cell Division Report Error

Solution:

In metaphase, chromosomes consisting of two sister chromatids get arranged at equator. Discontinuous fibres radiate out from two spindle poles and get connected to the disc shaped structure at the surface of the centromere called kinetochores. These are known as chromosome fibres or tractile fibrils. A kinetochore is a complex protein structure that is analogous to a ring for the microtubule hook; it is the point where microtubules attach themselves to the chromosome.