http://learn.genetics.utah.edu/content/tech/cloning/clickandclone/

IS IT CLONING ?  OR NOT ?Test your cloning savvy with this interactive quiz.

http://learn.genetics.utah.edu/content/tech/cloning/cloningornot/

What exactly is cloning?

Cloning is the creation of an organism that is an exact genetic copy of another. This means that every single bit of DNA is the same between the two!

Dolly

Species clonedThe modern cloning techniques involving nuclear transfer have been successfully performed on several species. Landmark experiments in chronological order:

Tadpole: (1952)

Carp: (1963)

Mice: (1986)

Sheep: (1996) MOLLY

Rhesus Monkey: (January 2000)

Gaur: (2001)

Cattle: (males, 2001) and (2005)

Cat: (2004)

Dog: (2005)

Rat: first cloned rat (2003)

Mule: 2003

Horse: 2003

Water Buffalo: 2009

Camel: (2009)

A donor cell is taken from a sheep’s udder. Donor

Nucleus

These two cells are fused using an electric shock.

Fused Cell

The fused cell begins dividing normally.

EmbryoThe embryo is placed in the uterus of a foster mother.Foster

Mother

The embryo develops normally into a lamb—Dolly

Cloned Lamb

Egg Cell

An egg cell is taken from an adult female sheep.

The nucleus of the egg cell is removed.

• The fused cell begins dividing, becoming an embryo. ____________•The embryo develops into a cloned animal ____________________•An egg cell is taken from a donor animal ______________________•The embryo is implanted into the uterus of a foster mother. _______•The body cell and egg are fused by electric shock. ______________•A body cell is taken from a donor animal ______________________•The nucleus is removed from the egg. ________________________

1. What is a clone?

2. Is the following sentence true or false? For years, many scientists thought that it was impossible to clone bacteria ________________

3. List two benefits of cloning:

4. List two concerns of cloning:

5. What kinds of mammals have been cloned in recent years?

6. Why do not scientists clone humans?

A member of a population of genetically identical cells produced from a single cell

a) It may help to save endangered speciesb) It makes copies of transgenic animals

a) Cloned animals may suffer from a number of genetic defectsb) Cloned animals may have health problems

Sheep, cows, pigs, mice, horse,…

Many people oppose the cloning of humans because ethical, moral, and religious reasoning

true

7. Individual cells can be isolated from a mature plant and grown with special mixtures of growth hormones to produce a number of genetically identical plants. This process is known as

8. From a single monkey, an animal breeder claims that he has successfully cloned two monkeys. He displays the two monkeys, a male and a female, to the public. The claim of the breeder should be rejected because

9. Write a paragraph in which you express you opinion about cloning human beings.

cloning

The two monkeys are not genetically identical, they show different sex genders.