Post on 04-Jan-2016
Types of Reproduction
Two Types of Reproduction
Asexual:
A single parent produces offspring genetically identical to itself.
Single-celled organisms.
Original parent
Identical Offspring
BACTERIA
Reproductive System Basics
More uniform offspring
Requires one parent
REGENERATIONREGENERATION occurs when part of an organism
grows to form other organisms that are often
still connected to the original organism.
FRAGMENTATION occurs when the body of the parent breaks into distinct pieces, each of which can produce an offspring.
Planaria reproduce by fragmentation and regeneration
Starfish reproduce by fragmentation and regeneration
BUDDINGBUDDING occurs when a small part of the parent's body separates from the rest and develops into a new individual, eventually becoming an independent organism.
Yeast – a type of bacteria that you use in bread. Reproduce
by budding.
Hydra – found in lakes and ponds. Reproduce by budding.
BINARY FISSION BINARY FISSION occurs when a cell simply grows larger, copies its DNA in genes and chromosomes, and then forms a cell membrane down the mid-section of the cell to form 2 new 'daughter' cells.
Bacteria reproduces by binary fission.
Reproductive System Basics
Two Types of Reproduction
Sexual:
Offspring is produced by combining the genetics of two parents.
Multicellular organisms.
Requires two parents
More genetic variation
Asexual vs. Sexual Asexual vs. Sexual ReproductionReproduction
Asexual Reprodu
ction
Sexual Reprodu
ction
Asexual vs. Sexual Asexual vs. Sexual ReproductionReproduction
Asexual Reprodu
ction
Sexual Reprodu
ction
A single parent cell produces offspring that are
exactly like the parent.
Two parent
cells join together
and develop
into a new individual
Most
animal
s
The new individual
shares traits from both
parents
The new individual has the exact same
traits as the
parent
Living things
make other living things
like themselves
All organisms
must reproduce in order for their kind to
survive
Humans
Most single celled
organisms
Strawberry Plants;
amoebas; coral
Asexual or Sexual ?
Involves two parents.
Asexual or Sexual ?
Creates Genetically
Diverse Offspring
Asexual or Sexual ?
Creates Genetically
Identical Offspring
Asexual or Sexual ?
Ex: Animals
Asexual or Sexual ?
Single Celled Organisms
Asexual or Sexual ?
Involves only one parent.
Asexual or Sexual ?
Example: Bacteria, Hydra & a Starfish
Asexual or Sexual ?
Multicellular Organisms
CLASSIFYING ORGANISMS
•Objective: Classify the following illustrations as either SEXUAL or ASEXUAL organisms.
Title: Bacteria
Title: Fetus
Title: Albino Spider & Alligator
ALBINO= lack of normal pigments in the skin that give the organism it’s natural color. It is a genetic abnormality.
Title: ANTRHRAXBacillus Anthrasis
Title: A Cat
Title: Hungry Lions
Title: Wrinkle-Face Bat
Title: Budding Yeast Cells
Title: Starfish(Regeneration of limb)
Title: Monkey
Title: Budding Hydra
Title: Aye-Aye(From Madagascar)
Unique Characteristics= the Aye-Aye has long fingers that tap on the tree branch only to spear it’s prey. It has big ears to detect movement of its prey at night inside the tree.
Title: Sharks