cloning october 19, 2.009 *10 3
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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? - PowerPoint PPT PresentationTRANSCRIPT
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?
Agenda
Catalyst Catalyst Cloning Cloning Cloning Video Cloning Video Cloning Debate Cloning Debate Exit Question Exit Question
Cloning
Key Point #1: Cloning is the process of creating a genetically identical copy of an organism by a somatic cell nuclear transfer.
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.
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: ????
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?
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.
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.
Prompt #3
Since a blastocyst is as big as the tip of a pin, it should not be considered to be a human life.