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All living
organisms consist of tiny basic units called
cells. |
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Most
of the cells, when viewed under the magnifying
devices like microscopes have a darker staining
body called nucleus which is surrounded with
the viscous fluid cytoplasm, and is enveloped
by a semipermeable cell membrane. |
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Inside
the nucleus, the genetic material DNA is present,
which at the time of cell division assembles
into the higher order structure called chromosome. |
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In a
human cell, the entire genetic material is bundled
into 23 pairs of chromosomes, and is collectively
referred as the 'human genome'. |
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