DR GOPAL MURTI / SCIENCE PHOTO LIBRARY DR GOPAL MURTI / SCIENCE PHOTO LIBRARY
Mitosis. Confocal light micrograph of a cell during metaphase of mitosis (nuclear division). During mitosis two daughter nuclei are formed from one parent nucleus. At metaphase, the chromosomes (blue) line up along the centre of the cell, and spindles (not seen) grow from their poles to attach to the centre (centromere) of each chromosome at points called kinetochores (red). Chromosomes are made up of two identical sister chromatids, which are separated into the two daughter nuclei, so that each daughter cell retains the parent cell's genetic information. Cytoplasmic proteins are green.
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