Human Cloning
Kristian Wilks & Jordan Nevejans
5th Hour
What is Human Cloning?
Human cloning is the
creation of copy of a
human with the same
DNA as the original of
a pre-existing human
using their DNA
Terms
• Clone: Duplicate of an organism having the
same DNA
• Embryo: Unborn animal still developing
• Ovum: Also known as an egg,
it is the female reproductive cell
• Stem Cell: Able to turn into any cell
Brief History
• Clones have existed in nature since
animals have existed
• “Nature’s clones” are identical twins
• Scientists discovered cloning in the 1880s
• First animal cloned was a frog
in 1952 (Cloning Fact Sheet)
Natural Example
• Identical twins
• 1 fertilized egg
splits into two
embryo
Types of Cloning
Embryo Cloning
Cells are extracted from fertilized
embryo, grown into separate embryos
with the same DNA, and a twin is
produced (Robinson)
Reproductive Cloning
Nucleus is extracted from a cell
and placed into an ovum. From
there it is placed in a womb
and grown into a new animal
Therapeutic Cloning
Stem cells are removed from the
embryo and are used to produce
new tissues or organs for transplants,
but the embryo is killed
Pros of Cloning
Pros
• Can be used to grow organs and
tissues for transplants (Cloning Fact Sheet)
• Stem cells can be extracted and
used for research to cure diseases
(Cloning Fact Sheet)
Pros Continued
• Families who have lost children could
clone the child using left over
DNA
• Clones could be used to study
genetics and help us better understand
how genes work and fix defects
within the genes
Cons of Cloning
Cons
• Animal cloning is easier than human
cloning & only about 1-2 successful clones
are produced for every 100 experiments
(Cloning Fact Sheet)
• Embryos are killed in the process
in some cases (Cloning Fact Sheet)
Cons Continued
• 30% of current clones are born
with a defect called “large-offspring
syndrome” (Cloning Fact Sheet)
• Humans have never been successfully
cloned by growing a clone from
human DNA (Cloning Fact Sheet)
THE END!
Quiz Time!
Question #1
What is human cloning?
A- Making a human that looks the
same as another
B- Creating a human with identical
DNA as another
C- There is no such thing as
human cloning
Question #2
True or False?
Humans have been successfully cloned
by growing a clone from human DNA
Question #3
What is a pro of human cloning?
A- Money
B- Organs can be grown for transplants
C- Increased size in our population
Question #4
True or False?
Twins are considered “nature’s clones”
Question #5
Opinion:
Is human cloning right or wrong and
why do you think this?
Work Cited
Robinson, Bruce A. “Reproductive and therapeutic
cloning.” religioustolerance.org. Ontario
Consultants on Religious Tolerance, August
1997. Web. 17 Feb. 2011.
“Cloning Fact Sheet.” ornl.gov. U.S. Department of
Energy of Science, Office of Biological and
Environmental Research, Human Genome
Program. May 2009. Web. 17 Feb. 2011.