Web Lesson: Cloning in Focus
Genetic Science Learning Center
http://gslc.genetics.utah.edu/units/cloning/

Open the link and view each of the sections under "Cloning in Focus". For each section, answer the question.

What is Cloning?

1. Who is Dolly? ______________________

2. When a zygote divides into to separate cells, it is called: _______________________________

3. Somatic cells are also called _________________________

4. In order to clone a gene, a gene is inserted into a _________________________

5. In order to create an embryo from a somatic cell, the donor egg cell must have its ___________________ removed.

Click and Clone

6. List all the materials needed to clone a mouse.

7. Place the following steps in the correct order.

________Stimulate cell division
________Deliver baby
________ Remove and discard the nucleus from the egg cell
________ Isolate donor cells from egg donor and germ cell donor
________ Transfer the somatic cell nucleus into the egg cell
________ Implant embryo into a surrogate mother

8. There are two time gaps in the process of cloning. What are they? (ie. what do you have to wait for?)

9. What color with the cloned mouse be? _____________ What is the name of this mouse? _____________________

Why Clone?

10. Why is cloning extinct animals problematic?

11. What are some reasons a person might want to clone a human?

The Clone Zone

12. What animal was cloned in 1885? _______________________

13. How did Spemann separate the two cells of the embryo of a salamander in 1902? _______________________

14. The process of removing a nucleus is called ________________________

15. In 1952, the nucleus of a ____________ embryo cell was placed into a donor cell. Did it work to clone the animal? ____________

16. Can the nucleus of an adult cell be injected into an egg cell and produce a clone? ___________

17. Why are mammals hard to clone? ______________________________________________

18. What were the names of the first two cloned cows? _________________________________

19. In what year was the National Bioethics Advisory Council formed? ______________________

20. The first mammal clone to be produced from an adult (somatic) cell? ____________________________

21. What do scientists do to adult cells to make them "behave" like embryos? _____________________________________

22. Transgenic, cloned sheep were used to produce what medical protein? ______________________________

23. What is a stem cell? ________________________________________________

Cloning Myths

24. Briefly describe in your own words, why CC the cat was not identical in color to Rainbow, even though she was a clone/

25. What is "nature vs nurture"?

Is it Cloning or Not?

26. For each of the following scenarios, indicate YES (it is cloning) or NO (it is not cloning)

___________Sperm taken from a mole goat is combined with a female's egg in a petri dish. The resulting embryo is implanted into the female's uterus to develop
___________A sheep embryo, composed of 16 cells, is removed from the mother's uterus and separated into indivudal cells. Each cell is allowed to multiply, creating 16 separate embryos, which are then implanted in different female sheep to develop to maturity.
___________A cow with many desirable traits is stimulated with hormones to produce a number of egg cells. Each of these eggs is fertilized and implanted into a surrogate mother.
___________ In vitro fertilization
___________ Cell nuclei from an extinct wolly mammoth are placed into enucleated cow cells.

27. Define or describe each of the following processes (you may need to reset the Cloning or Not Screen)

Invitro fertilization

Embryo splitting

Somatic Cell Nuclear Transfer

Multiple Ovulation Embryo Transfer

Artificial Insemination

What Are the Risks of Cloning?

28. What is one reason why cloning animals has such a high failure rate?

29. What is a telomere and how does it affect cloned animals?

What Are Some Issues in Cloning?

30. Pick one of the questions to ponder and ....ponder it. Write a brief essay on your thoughts and opinions.