Download Aim: Cloning is a type of Asexual Reproduction. How are scientists

Ms. Hu
Living Environment Name: _______________ Class: ______ Date: ____________ Pg#_____
Aim: Cloning is a type of Asexual Reproduction. How are scientists able to create clones
of organisms in the laboratory?
Do Now: Define the following terms:
Budding
Binary Fission
Spores
When you think of Cloning what you do think about? Did you ever hear anything in the news regarding
cloning?
Mini Lesson Notes:
Definition of Cloning:
Example 1: Prize Winning Beefsteak Tomato Plant.
You won a vegetable growing contest where you grew the largest beefsteak tomato! You want to make sure
that next year you grow a prize winning tomato? How would you do that?
Procedure to clone a Tomato Plant:
a. Cut a part of the plant, such as a stem, from a plant and plant it. It will
develop roots and leaves,; this new plant will be genetically identical to
the parent plant
b. Take out a cell from a mature plant. From the cell with a special mixture
of growth hormones. The cell will develop into a plant that will be
genetically the same as the parent
Example 2: Dolly the Sheep http://www.encyclomedia.com/video-dolly_the_sheep.html
Scientists are able to make clones of mammals like a sheep using a special laboratory technique.
1. Remove the nucleus of a donor egg from a black-faced sheep to
create an egg cell with NO DNA in it.
2. Suck out the DNA from a white-faced sheep
3. Using an electrical current ZAP, the empty egg and the DNA from
the white faced sheep
4. Empty egg and DNA will fuse together to create a zygote
5. Embryo is implanted into another female sheep
6. The lamb will have the exact DNA as the white-faced donor DNA
sheep
Work Period: In groups of four, create a diagram showing how to create the following types of clones.
Group A: Your beloved Cat Oscar is very old. You want to make a clone of him. How would you do it?
Group B: You are a competitive gardener; you grow a lovely black rose. How would you clone the rose plant?
Group C: You have selectively bred a prize winner fish named ‘Carpy’. How would you make more clones?
Group D: You have a rare African clawed frog. For more zoos to enjoy the frog, how would you clone it?
Extension Questions:
1. Would a clone be exactly genetically identical to the donor’s DNA? Why or why not?
2. Gene expression is influenced from environmental factors. If Carpy grew up fed with a different food
would he have the same physical traits as the original Carpy?
3. Do you think that a genetically cloned cat would have the same personality as the orginal pet?
Closing: What is a clone? How are scientists able to use this technology to benefit society?
Homework: Try question on Cloning: # 6. 7. 8. On the homework Sheet