Download Worksheet on stem cells

Worksheet on stem cells /cloning
Partha
Name__________________
Per_________
Go to http://learn.genetics.utah.edu/
Click on Stem cells
Watch “Nature of stem cells”
Use the following terms and put it in the corresponding boxes.
• blastocyst
• mesoderm
• heart
• endoderm
• muscles
• gut tube
• ectoderm
• intestine
• skin and
nervous system
•lungs
http://learn.genetics.utah.edu/content/tech/stemcells/whatissc/
What is cell differentiation?
What are the three layers of cells in the blastocyst?
What will the outer layer(ectoderm) of cells form?
What will the inner layer(mesoderm) of cells form?
What will the inner cell mass(endoderm) form?
What are somatic stem cells? Give examples
What are embryonic stem cells?
Click on “ unlocking stem cell potential” and Click on “ stem cells quick reference”
What are stem cells used for?
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CLONING
GO TO Home page
CLICK ON “Cloning”
“Click and clone” a mouse clone.
What was the first animal cloned?
What color is the mouse clone?
Write the steps of clonng in order. Number the steps.
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Go to http://learn.genetics.utah.edu/content/tech/stemcells/whatissc/
Click on “ Cloning timeline”
When did When did Walter Sutton prove that chromosomes hold information?
Who found the structure of DNA?______________________
What year?______________
When was the term “clone” first used?___________________
Click on “1996” on the timeline. What is the name of the first organism ever to be
cloned from adult cells? ________________________
Click on “Is it cloning or not” and play the game.
Is it Cloning or Not?
14. 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.
___________ Cell nuclei from an extinct wolly mammoth are placed into enucleated cow
cells.
What are some of the risks and issues in cloning?
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