Asexual Reproduction Living Environment

Mitosis animation: http://brodylab.eng.uci.edu/cgi-bin/jpbrody/animation/files/6-973887139.html

Cut it half Binary Fission = simplest form of asexual reproduction. Parent organism divides into two equal parts. Each daughter cell becomes a new individual. Seen in bacteria and protozoans

Binary Fission 2 1 3

They Were best buds Budding = Parent organism divides into two unequal parts. The new organism is created as a smaller out growth or bud on the outside of the parent. Buds will break off and live independently or remain attached and form a colony.

Yeast – Once the yeast cell reaches a certain size it undergoes mitosis. Once the genetic material is replicated budding begins. Hydra – Cells on the outside of the parent hydra begin to undergo mitotic division creating a small group of cells. Those cells continue to divide until in a completely new hydra is formed. Can also reproduce sexually.

Budding

Yeast cell cycle including budding: http://brodylab.eng.uci.edu/cgi-bin/jpbrody/animation/files/13-977277560.html

Can I have some spore? Spore Formation – spores = small specialized cells that contain a nucleus and cytoplasm surrounded by a thick outside wall which protects the spore. Under the right conditions the spore can rise to a new organism. *Found in bacteria, molds, yeast, mushrooms, mosses, ferns and some protozoans.

Spore formation

Don’t try this at home Regeneration = The ability to re-grow lost or damaged body parts. Hydra, planaria, starfish, and earthworm More complex animals less able to re-grow parts. Crab can re-grow a claw. Some reptiles can re-grow a tail. Most mammals can repair damaged tissue but can not re-grow missing parts.

Regeneration