sci 9 lesson 4 mar 7 - ch 5.2 cloning (2-4)

Homework from last class:Homework from last class:Answer Reading Check Questions 1-5 p.

178Study for Quiz on Asexual

Reproduction Keep working on your Mitotic Movies

project - due March 9 for Science 9 (2-4)

Read over class notes and check out the class blog: http://msoonscience.blogspot.com/

How much would you pay for this How much would you pay for this puppy??puppy??http://www.youtube.com/watch?

v=DDUULl7HOws&feature=related

Human-assisted Human-assisted CloningCloningChapter 5.2 pp. 176-178

Human-assisted CloningHuman-assisted CloningUnlike simpler animals such as sponges and hydras, more complex animals lose their cloning ability as they become specialized.

Human assistance is required

Humans use all the asexual cloning methods in order to produce desired results with organisms:

Binary fission Budding Fragmentation

Vegetative Reproducition Spore Formation

Reproductive CloningReproductive CloningReproductive cloning: (aka adult DNA cloning)Purpose is to produce a genetic duplicate of an existing or dead organism.

*Not all body cells can be used to make a clone

(some cells are specialized)*

Steps involved:1. Remove nucleus from an egg cell2. A mammary gland cell is removed from an adult

female3. Electricity fuses mammary and egg cell4. Fused cell begins dividing5. Dividing embryo is inserted into surrogate mother

Reproductive CloningReproductive Cloning

p. 177

Reproductive CloningReproductive CloningIssues: Only 10% of clones usually survive Surviving clones can be abnormally large and have higher rates of infection and cancerExample:

Dolly (the cloned sheep) died after only 6 years due to lung disease

Average sheep lifespan: 10-12 years)

Therapeutic CloningTherapeutic CloningTherapeutic cloning: used to correct health problems

• Very important to therapeutic cloning are stem cells (cells that can become different types of cells)

• Controversial because the best stem cells are from embryos which are destroyed when harvesting cells

• Stem cells can be used to replace cells damaged from injuries or disease

• Diabetes, spinal injuries, Parkinson’s disease are only a few that can benefit from stem cell therapy

Activity time!Disagree/Agree/Neutral

Disagree/Agree/Neutral Disagree/Agree/Neutral ActivityActivity

I will post a controversial statement about cloning. Individually, decide whether you agree, disagree, or are neutral.

Once you decide on your position, move to the designated location.

The ‘Agree’ group will talk together and come up with a joint statement about why they agree with the statement.

The ‘Disagree’ group will do the same thing.

The ‘Neutral’ group will think of 1 question they want to ask the ‘Agree’ and ‘Disagree’ group to help them choose a side.

The ‘Agree’ group and ‘Disagree’ group will make a final statement. The people in the ‘Neutral’ group must then choose a side.

StatementStatement

It is reasonable to spend $155,000 to clone a beloved pet if I have the money and desire to do so.

(remember Lancelot Encore from the video?)

StatementStatement

Human-assisted cloning is an abuse of power – it is not natural, and therefore we

should avoid doing it.

StatementStatement

I would want to have a clone of myself so that there will be a supply of my organs in case any of my organs fail.

StatementStatement

It is wrong to destroy stem cells from embryos that

are able to develop into an individual/person.

StatementStatement

We should concentrate our efforts on cloning famous

people (ex. Albert Einstein) and extinct animals.

Make Your Own Clone!Make Your Own Clone!“Click and Clone” – Make a copy of a brown mouse named Mimi!

http://learn.genetics.utah.edu/content/tech/cloning/clickandclone/

Homework for next class:Homework for next class:Complete Checking Concepts Qs 1-14 on

p. 183Keep working on your Mitotic Movies

project - due March 9 for Science 9 (2-4)

Read over class notes and check out the class blog: http://msoonscience.blogspot.com/

Works CitedWorks CitedImages taken from the following sources:http://www.thenakedscientists.com/HTML/articles/article/

katarneycolumn11.htm/

http://knowledgenews.net/moxie/science/cloning-science-2.shtml

http://beadfingers.blogspot.com/

http://dontdatethatdude.wordpress.com/2008/03/05/now-you-can-replicate-your-pet-but-its-gonna-cost-you/

http://www.youtube.com/watch?v=DDUULl7HOws&feature=related

http://quintoncools.blogspot.com/2010_09_01_archive.html