Asexual reproduction and mitosis
Asexual reproduction is used by all
single-celled organisms and all somatic cells (e.g. skin cell) of
a multicellular organism during growth and wound healing. Simple
cell division involves growing the size of a cell, duplicating the
genetic material and separating it in equal amounts into the two
ensuing daughter cells. This process is known as mitosis in eukaryotic
cells, and binary fission in prokaryotic cells. The result is two
genetically identical cells, with the exception of random mutations,
or errors in copying during cell division. Most asexually reproducing
cells come in large numbers (i.e. population) and have a relatively
short generation time, the time elapsed between two generations.
For prokaryotes and simple cells the generation time can be measured
in hours. This allows for a very large number of offspring in a
matter of days or month which is often a time frame during which
environmental changes occur only slowly or not at all.
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