7

Sexual Versus Asexual

Reproduction

Prepared for ED 592: Technology in Education for Dr. Susan LeBeau

Created by

Michael Boisclair

http://www.tulane.edu/~wiser/protozoology/notes/images/ciliate.gif

Seventh-Grade Life

Science

Reproduction

Reproduction is the production of offspring, or new individuals, through a sexual or asexual process to make sure a species can continue.http://www.fredhoogervorst.com/

photo/23392/

Sexual ReproductionRequires Two Sex Cells Egg and Sperm

Egg and sperm combine to form new organism

New organism is genetically different from the parents

http://www.cartoonstock.com/lowres/mpe0048l.jpg

Asexual Reproduction Involves only one parent producing

identical offspring with the exact same genetic material.

Types of Asexual Reproduction

Binary fissionRegenerationBuddingSpores

7Binary Fission

When the parent divides into two new identical cells

Amoeba

http://h1t6.files.wordpress.com/2010/03/1-olih023p.gif

Regeneration

The ability of an

organism to

regenerate

injured parts into

new individuals

http://www.meritnation.com/discuss/question/1435035/what-is-d-difference-btw-1-fusion-nd-fragmentation-2-fragmentaion-nd-regeneration-3-budding-nd-regeneration

Planaria

Budding

A cell grows

from the body

of a parent cell

similar to the

way a bud

forms on a tree

branch. The

new cell breaks

away and lives

on its own. http://www.saburchill.com

Hydra

http://www.youtube.com/watch?v=4JIytOL-Q18

Spore Formation

Fungi most often

reproduce by

making spores.

Lightweight spores

are surrounded by

a protective

covering and can

be easily carried

through air or

water to new

places.

http://www.bbc.co.uk/oxford/pictures/visions_science/pop_up_01.shtml

Remember!

Offspring from sexual reproduction results in organisms that are genetically different from the parents.

Offspring from asexual reproduction are genetically identical to the parent.

The Five Kingdoms and ReproductionMonerans Protists Fungi Plants Animals

Binary fission

FissionAsexualSexual

SporesBudding

SexualAsexual Budding

AsexualSexual

Bacteria AmoebaPlanktonAlgae

MushroomsMoldMildewYeast

MossFernLiverwortsHorse tails

SpongesWormsInsectsMammals