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Cloning

Cloning. Write in complete sentences! Don’t talk during the Catalyst!. Catalyst: What is a somatic cell ? What is a gamete ? What is a stem cell ? Explain how stem cells can be used to help people . Give a specific example.

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Cloning

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  1. Cloning Write in complete sentences! Don’t talk during the Catalyst! • Catalyst: • What is a somatic cell? • What is a gamete? • What is a stem cell? • Explain how stem cells can be used to help people. Give a specific example. • Anticipation Guide at the top of your worksheet. (“Before Class Begins”)

  2. Objectives By the end of today, all SWBAT… • Describe the steps necessary to clone organisms • Evaluate pros and cons of cloning organisms

  3. Agenda • Catalyst • Catalyst • Cloning • Cloning • Cloning Video • Cloning Video • Cloning Debate • Cloning Debate • Exit Question • Exit Question

  4. Cloning • Key Point #1: • Cloning is the process of creating a genetically identical copy of an organism by a somatic cell nuclear transfer.

  5. Don’t copy, just LOOK.

  6. Steps of a Somatic Cell Transfer • The nucleus is removed from an egg • The nucleus is removed from the cell that needs to be cloned • The nucleus from the cell that needs to be cloned is put into the empty egg. • It is given a jolt of electricity, causing it to divide and grow.

  7. Species that have been successfully cloned to date • Tadpole: 1952 • Carp: 1963 • Sheep: 1996 – FIRST ADULT ANIMAL TO BE CLONED. • Cat: 2002 • Mule: 2003 • Horse: 2005 • Camel: 2005 • Rhesus Monkey: 2007 • Human: ????

  8. Why clone animals? • Key Point #2: • There are many reasons to clone animals. • Save endangered species • San Diego Zoo • Audubon Zoo • Bring extinct species back to life • Nutritious and delicious food

  9. Implications of cloning • In 2007, scientists cloned a rhesus monkey embryo and harvested monkey stem cells. • 2 minutes, Pair-Share • How would society change if we could clone humans?

  10. Stem Cell Video • Heads up, pay attention. • What are we trying todo with cloned human cells? • What are the potential benefits? • What are the ethical issues? • WHOA! A LOT TO THINK ABOUT.

  11. THINK • What are we trying todo with cloned human cells? • What are the potential benefits? • What are the ethical issues?

  12. Prompt #1 It is morally acceptable to clone animals (for any of the reasons we have discussed today)

  13. Prompt #2 People should be able to destroy embryos to improve the life of already living humans.

  14. Prompt #3 Since a blastocyst is as big as the tip of a pin, it should not be considered a human life.

  15. Prompt #4 Cloning humans is unnatural and should not be pursued.

  16. Prompt #5 Overall, the benefits of cloning (humans and animals) outweigh the negative consequences.

  17. Cloning worksheet BONUS Class Point Class volume is kept at LEVEL ONE (Talking is only necessary when you are being tutored on a problem) I-N-D-E-P-E-N-D-E-N-T Work Time

  18. Key Point Wrap-Up • Key Point #1: Cloning is the process of creating a genetically identical copy of an organism by a somatic cell nuclear transfer. • Key Point #2: There are many reasons to clone animals. • Key Point #3: We can clone human embryos to harvest stem cells for research.

  19. Exit Questions Describe the four steps necessary to clone an organism. Write in complete sentences! Don’t talk during the Exit Question!

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