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Cloning October 19, 2.009 *10 3

Cloning October 19, 2.009 *10 3. Objective: SWBAT describe the steps necessary to clone organisms SWBAT evaluate pros and cons of cloning organisms Catalyst: What are your feelings on cloning?

bernard-williams
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Cloning October 19, 2.009 *10 3

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  1. Cloning October 19, 2.009 *103 • Objective: • SWBAT describe the steps necessary to clone organisms • SWBAT evaluate pros and cons of cloning organisms • Catalyst: • What are your feelings on cloning? • It is 2050 and scientists have developed the technology to clone humans. What is one positive consequence of this? What is one negative consequence of this?

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

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

  4. Don’t copy, just look.

  5. Sure, Mr. J. What does this look like in real life though? • I'M GLAD YOU ASKED!!!!

  6. Steps of a Somatic Cell Transfer • 1) A nucleus is removed from an egg • 2) The nucleus is removed from the cell that needs to be cloned • 3) The nucleus from the cell that needs to be cloned is put into the empty egg. • 4) 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. REMEMBER THIS!! • Rhesus Monkey: (2007) • Cattle: (2005) • Cat: (2002) • Mule: (2003) • Horse: (2005) • Human: ????

  8. Implications of cloning • In 2007, scientists cloned a rhesus monkey embryo and harvested monkey stem cells. • This is a large step in science! Humans are primates, as well. This could have PROFOUND effects. • 2 minutes- Think-Pair-Share. If we could clone humans, what would that mean for our society?

  9. Cloning • Key Point #2: • Cloning embryos may be useful to harvest stem cells for research! After cloning an organism, we can dissect that embryo to remove stem cells.

  10. Stem Cell Video • Expectations: • You should be able to answer these questions on the worksheet. • Keep your head up and pay attention during this movie. • What are we trying to do with cloned human cells? • What are the potential benefits? • What are the ethical issues? • WHOA! A LOT TO THINK ABOUT.

  11. Worksheet • Independent work time on the worksheet

  12. Prompt #1 People should be able to destroy embryos to improve the life of already living humans.

  13. Prompt #2 Cloning’s positive benefits outweigh the negative consequences.

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

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

  16. Exit Question Describe the four steps necessary to clone an organism.

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