Asexual Reproduction Mitosis is the basis of asexual reproduction Involves only one parent individual Results in genetically identical offspring:
Clones
Disadvantage All offspring genetically identical
If environment changes in some way then…
… could cause complete of a population
destruction
Strategies for Asexual Reproduction
Binary Fission Sporulation Regeneration Budding Vegetative Propagation
Most important on WJEC
Binary Fission Mitosis followed by
splitting of the individual
Only in the most simple of organisms
Bacteria and Protoctists
Sporulation Mitosis followed by the
production of asexual spores
Spores can survive adverse conditions
Good for dispersal Fungi and lower plants
(mosses / ferns)
Budding Outgrowth from
parents Produces miniature of
parent This bud then drops
off the parent and is independent.
Yeast
Hydra
Vegetative Propagation Sophisticated version
of budding that occurs in plants.
May involve perennating organs:
bulbs, corms etc where stored food means can be dormant over winter