Asexual Reproduction

1. Cell Division - Amoebas Asexual Reproduction – Mitosis Amoeba – unicellular protozoan Every three days grows large enough to divide No shape – to star shape – to long and thin shape – to two no shape cells

Amoebas

2. Budding Asexual Reproduction Occurs in yeast cells Mitosis, yet instead of cell dividing, new nucleus goes into a bulge (bud) Sometimes bud may break off, but usually continues budding process and forms a long chain of yeast cells

Budding Yeast Cells

3. Regeneration Regeneration – asexual reproduction by the process of regrowing missing body parts Example: Planarian (flat worm)…cut into pieces and each piece will grow missing parts until it becomes a whole planarian. Regeneration – can be repair or replacement vs reproduction Example: deer growing new antlers or a lizard growing a new tail

Planarian

Splitting Planarian

4. Spores Spore – a cell surrounded by a protective covering Asexual reproduction - one cell can produce many spores and each can grow into a new organism Protective covering helps them live in unfavorable conditions Example: bread mold

Bread Mold Spores

5. Mitosis vs. Meiosis A. Mitosis- one organism - cell duplicates genes – cell divides – asexual reproduction B. Meiosis – two organisms - each gives a complete copy of genes to form a new organism – sexual reproduction