Asexual Reproduction (1)

Asexual ReproductionAsexual Reproduction

Mr.MillerMr.Miller

Is this Statement true or false?Is this Statement true or false?

Two parents are needed Two parents are needed to produced a new to produced a new

organismorganism

What in the world is this?What in the world is this?

This is a starfishThis is a starfish

Some starfish have the ability to regenerate if their limbs

are removed

What is reproduction?What is reproduction?

Reproduction Reproduction is the process of producing is the process of producing offspringoffspring

OffspringOffspring- a new organism produced by - a new organism produced by one or two parentsone or two parents

There are two types of reproductionThere are two types of reproduction Asexual ReproductionAsexual Reproduction Sexual ReproductionSexual Reproduction

What is What is asexualasexual reproductionreproduction??

Asexual ReproductionAsexual Reproduction is the is the process of producing process of producing

offspring with only one offspring with only one parent.parent.

How does this happen?How does this happen?

There are several forms of asexual There are several forms of asexual reproduction, which include: reproduction, which include:

Regeneration (Fragmentation)Regeneration (Fragmentation) BuddingBudding Binary FissionBinary Fission MitosisMitosis

What is Budding?What is Budding? Budding is a form of asexual reproductionBudding is a form of asexual reproduction

Budding involves the development pinching off Budding involves the development pinching off of a new cellof a new cell

Budding is very common in Budding is very common in plants and and fungi, but , but may be found in animal organisms as well, such may be found in animal organisms as well, such as the as the Hydra. Usually, the protrusion stays . Usually, the protrusion stays attached to the primary organism for a while, attached to the primary organism for a while, before becoming free. The new organism is before becoming free. The new organism is genetically identical to the primary one (a genetically identical to the primary one (a clone). ).

Budding in a hydraBudding in a hydra

Regeneration (Fragmentation)Regeneration (Fragmentation)

Regeneration is another Regeneration is another form of asexual form of asexual reproduction reproduction

During regeneration, an During regeneration, an organism breaks into two organism breaks into two or more parts.or more parts.

Each part can grow into Each part can grow into separate organismsseparate organisms

Starfish and sponges Starfish and sponges have the ability to have the ability to reproduce asexually by reproduce asexually by regenerationregeneration

Binary FissionBinary Fission

Binary fission is a process Binary fission is a process of asexual reproduction in of asexual reproduction in prokaryotic cellsprokaryotic cells

Binary fission has four Binary fission has four stepssteps

1. cell growth1. cell growth

2. DNA replication2. DNA replication

3. Cell separation & growth3. Cell separation & growth

4. The cell splits in two4. The cell splits in two

Asexual Reproduction PosterAsexual Reproduction Poster

Instructions: You must create a poster that Instructions: You must create a poster that contains the following elementscontains the following elements

Title (5pts)Title (5pts) Definition of Title term (10pts)Definition of Title term (10pts) A drawing to represent each type of asexual A drawing to represent each type of asexual

reproduction(20 pts each)reproduction(20 pts each) Title to label the type of asexual reproduction be displayed Title to label the type of asexual reproduction be displayed

(5 pts each)(5 pts each) A description of what occurs during this type of asexual A description of what occurs during this type of asexual

reproduction (10 pts each)reproduction (10 pts each)

What is mitosis?What is mitosis?

Mitosis is the process of cell division in Mitosis is the process of cell division in eukaryotic cellseukaryotic cells

Cells have a life cycle which is called the Cells have a life cycle which is called the cell cycle. The cell cycle. The cell cyclecell cycle includes two includes two stages: stages:

InterphaseInterphase MitosisMitosis

Which organisms reproduce this Which organisms reproduce this way?way?

Amoebas are Amoebas are single cell single cell organisms that organisms that use mitosis to use mitosis to reproducereproduce

The cells in the The cells in the human body also human body also reproduce through reproduce through mitosismitosis

InterphaseInterphase Before cells can divide their DNA must be Before cells can divide their DNA must be

replicated during replicated during interphaseinterphase.. DNA is organized into structures called DNA is organized into structures called

chromosomeschromosomes Then Cell Division Then Cell Division occurs in a series of occurs in a series of

stages or phasesstages or phases

There are four phases in mitosis: There are four phases in mitosis: ProphaseProphase MetaphaseMetaphase AnaphaseAnaphase TelophaseTelophase

ProphaseProphase

MetaphaseMetaphase

AnaphaseAnaphase

TelophaseTelophase

CytokinesisCytokinesis

Lets Review What We Learned!Lets Review What We Learned!

What is reproduction?What is reproduction?

Reproduction is the process of Reproduction is the process of producing offspringproducing offspring

What Are Offspring?What Are Offspring?

Offspring are new organisms Offspring are new organisms created by one or two parentscreated by one or two parents

What are the two types of What are the two types of reproduction?reproduction?

Asexual Reproduction Asexual Reproduction

& &

Sexual ReproductionSexual Reproduction

What is Asexual Reproduction?What is Asexual Reproduction?

Asexual Reproduction is Asexual Reproduction is the process of producing the process of producing offspring with only one offspring with only one

parentparent