Unit 2 (Cloning & Stem Cells)

Question 1

What is the definition of “clone?”

Answer 1

A genetically identical copy.

Question 2

What type of cloning cloned Dolly the Sheep?

Answer 2

(SCNT) Somatic Cell Nuclear Transfer

Question 3

What are the basic steps of SCNT for Dolly?

Answer 3

1. A haploid cell is taken from a sheep, and the nucleus is removed.
2. The nucleus of the somatic cell is taken from Dolly, and placed into the empty haploid cell.
3. The cell is “zapped” and then begins multiplying.
4. The cell mass is implanted into a sheep.
5. Dolly was born from the sheep.

Question 4

What is another name for SCNT?

Answer 4

“Reproductive” Cloning

Question 5

What are the two main reasons we clone animals?

Answer 5

1. Propagating transgenic animals
2. Propagating endangered species

Question 6

What are Transgenic animals?

Answer 6

Animals genetically changed and bred for a purpose. (ex. super salmon)