Cloning

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”)

Write in complete sentences!

Don’t talk during the Catalyst!

Objectives

By the end of today, all SWBAT…

Describe the steps necessary to clone organisms

Evaluate pros and cons of cloning organisms

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.

Don’t copy, just LOOK.

Steps of a Somatic Cell Transfer

1. The 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. Cat: 2002 Mule: 2003 Horse: 2005 Camel: 2005 Rhesus Monkey: 2007 Human: ????

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

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?

Stem Cell Video

Heads up, pay attention. 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.

THINK

What are we trying to do with cloned human cells?

What are the potential benefits? What are the ethical issues?

Prompt #1

It is morally acceptable to clone animals (for any of the reasons we have discussed today)

Prompt #2

People should be able to destroy embryos to improve the life of already living humans.

Prompt #3

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

Prompt #4

Cloning humans is unnatural and should not be pursued.

Prompt #5

Overall, the benefits of cloning (humans and animals) outweigh the negative consequences.

I-N-D-E-P-E-N-D-E-N-T Work Time

Cloning worksheet

BONUS Class Point Class volume is kept at LEVEL ONE (Talking is only necessary when you are

being tutored on a problem)

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.

Exit Questions

Describe the four steps necessary to clone an organism.

Write in complete sentences!

Don’t talk during the Exit Question!