BIOTECHNOLOGY -WORKSHEET 1
1. ___________ is the creation of an organism that is an exact copy of
another.
2. You might not believe it, but there are human clones among us right now.
They weren’t cloned in a lab, though; they’re ___________
___________ created naturally.
3. ___________ ___________ ___________ is the relatively
low-tech version of cloning. As the name suggests, this technology mimics
the natural process of creating identical twins, but occurs in a
___________ ___________ instead of in the mother’s body.
4. Somatic cell nuclear transfer was the method used to create
___________, the first mammal ever to be cloned from an adult
somatic cell.
5. A ___________ ___________ is any cell in the body other than
the two types of reproductive cells, sperm and egg.
6. It’s the differences in our ___________ that makes each of us unique.
7. To
make
Dolly,
researchers
isolated
a
___________
___________ from an adult female sheep. Next, they removed the
___________ from that cell and transferred it into an egg cell from
which the nucleus had been removed.
After a couple of chemical tweaks, the egg cell, with its new nucleus, was
behaving just like a freshly fertilized ___________. It developed into an
___________, which was implanted into a ___________
___________ and carried to term.
8. Play the natural fertilization movie for this question: Because the offspring
contains a combination of the two sets of parents’ chromosomes, it is not
genetically identical to either parent but is, instead, ___________
___________.
9. Play the somatic cell nuclear transfer movie for questions 9-11: The somatic
cell is cultured in a medium that causes it to ___________
___________ as an undifferentiated cell.
10.An egg cell is ___________ from a different animal. The egg cell’s
___________ is removed.
11. The egg cell and the somatic cell are fused using an ___________
___________.
12. What is the advantage of cloning an adult animal rather than an embryo?
13.Is the natural process of human embryos splitting to produce identical twins
a form of cloning?
14.What are the ethical objections to cloning humans?
15.Go to the website and follow the instructions, click and clone
https://learn.genetics.utah.edu/content/cloning/clickandclone/
and
answer the following questions.
● List all the 6 steps with diagram
● What color was the cloned mouse?
In the real mouse cloning experiment, what was the name of the first
born survivor?
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