AsexualAsexualReproductionReproduction

What is Reproduction?What is Reproduction?

ReproductionReproduction is the process in which is the process in which organisms produce more of their own kind.organisms produce more of their own kind.

Asexual reproductionAsexual reproduction occurs when a new occurs when a new organism is produced by organism is produced by oneone parent. The parent. The new organism will be identical to the new organism will be identical to the parent. parent.

Sexual ReproductionSexual Reproduction requires two parents requires two parents each giving 23 chromosomes to the each giving 23 chromosomes to the offspring.offspring.

Types of Asexual Types of Asexual ReproductionReproduction

ParthenogenesisParthenogenesis FissionFission Vegetative PropagationVegetative Propagation FragmentationFragmentation BuddingBudding

ParthenogenesisParthenogenesis

A female organism produces an egg A female organism produces an egg that develops into a new organism that develops into a new organism without being fertilized.without being fertilized.

Identical copy of parent.Identical copy of parent.

Examples:Examples: insects, reptiles and fishes. insects, reptiles and fishes.

Example

Whiptail LizardsWhiptail Lizards

ParthenogenesisParthenogenesis

A female whiptail A female whiptail lizard may lizard may produce eggs produce eggs that develop into that develop into identical identical versions of itself. versions of itself.

FissionFission

A single-celled organism divides into A single-celled organism divides into two cells of the same size.two cells of the same size.

Each is identical to the other.Each is identical to the other.

Examples:Examples: Bacteria, Paramecium, Bacteria, Paramecium, AmoebaAmoeba

Example

BacteriaBacteria

FissionFission

A single-celled A single-celled organism that organism that has no nucleus has no nucleus or cell wall and or cell wall and reproduces by reproduces by splitting in two. splitting in two.

Vegetative PropagationVegetative Propagation

New plants can be produced from New plants can be produced from sections of parent plants that are cut sections of parent plants that are cut off. off.

Identical copy of parent.Identical copy of parent.

Examples:Examples: spider plants, willow treesspider plants, willow trees

Example

StrawberriesStrawberries

Vegetative Vegetative PropagationPropagation

Strawberries Strawberries reproduce new reproduce new plants by the plants by the division of cells division of cells from runners or from runners or roots. roots.

FragmentationFragmentation

An organism breaks up into An organism breaks up into fragments.fragments.

Each of these fragments develops Each of these fragments develops into an identical copy of the original into an identical copy of the original organism.organism.

Examples:Examples: flatworm, planarianflatworm, planarian

Example

Planarians Planarians

FragmentationFragmentation

The body of the The body of the parent breaks parent breaks into pieces, each into pieces, each of which can of which can produce an produce an offspring offspring

BuddingBudding A bud grows on the body of the parent.A bud grows on the body of the parent.

Identical copy of its parent. Identical copy of its parent.

Sometimes the bud separates from the Sometimes the bud separates from the parent and becomes independent. parent and becomes independent.

Examples:Examples: hydra, yeast, spongehydra, yeast, sponge

Example

HydraHydra

BuddingBudding

Cell division forms Cell division forms a bud that is an a bud that is an identical copy of identical copy of its single parent its single parent that separates that separates from the parent from the parent and becomes and becomes independent. independent.