Asexual

Reproducti

onUnit 4-1 Notes

Mr. Hefti – Pulaski Biology

Type of reproduction

How does it work? Example(s) of organisms that

reproduce this way

Diagram

Binary fission

Budding

Spores

Eyes on tubers

Runners

Bulbs

Regeneration

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Binary fissionHow does it work?

The organism copies its DNA then splits in half

Example organisms:BacteriaParameciumAmoeba

BuddingHow does it work?Outgrowth of cell

membrane pinches off and becomes its own organism

Example organisms:HydraYeast

SporesHow does it work? Packets of genetic

information grow into new organism

Example organisms: Ferns Mosses Mold Mushrooms

Eyes on tubersHow does it work?New plant

grows out of the spud

Example organisms:Potatoes

RunnersHow does it work?

New plant grows from horizontally growing stems

Example organisms: Strawberries Water lilies

BulbsHow does it work?

Underground nutrient-storage structure grows into new plant

Example organisms:TulipsDaffodilsOnions

Regeneration How does it work?

Body parts re-grow or chunks grow into new organisms

Example organisms: Sea star Planaria Sponges Lobster

AKA “fragmentation”

All forms result in genetically identical offspring (unless mutation occurs)

Cell division by mitosis (only)

No need for Punnett squares for these organisms!

Common features

Divide sheet of paper into 4 equal sections Examine four different slides using microscope Provide overall title for activity List names of group members – on the front! In each box:

Draw diagram of specimen List name of specimen List magnification at which you viewed it (use your best

judgment regarding appropriate power) Label type of asexual reproduction the organism

undergoes

Graded Assignment

Type of reproduction

How does it work? Example(s) of organisms that

reproduce this way

Diagram

Binary fission

Budding

Spores

Eyes on tubers

Runners

Bulbs

Regeneration

Unit 4-1 Notes… Asexual Reproduction Nam

e: ____________________________________________________________________ Period: ______