Download explaining GM powerpoint

Gene Jury
Genetic
Modification
Cell
DNA
Living thing!
Wee baldy sheep
Nucleus
Chromosomes
size
gene
(wee)
DNA
Coat
gene
(baldy)
Genes
size
gene
size
gene
Coat
gene
Coat
gene
I have big woolly sheep and
wee baldy sheep,
but I want BIG BALDY
sheep! How can I get them?
I know! I’ll cross
the two types
together.
X
X
Now we just need to breed from the big
baldies to make a flock
X
X
“baldy”
gene
“wonky”
gene
Linkage
How could we get rid
of the wonky gene?
Wee baldy
Big woolly
“wee”
gene
“baldy”
gene
“wonky”
gene
“big”
gene
“baldy”
gene
Genetic modification (GM)
Changing the genes of a living
thing, often by adding genes
from another living thing.
How is it done?
This is a video of microinjection of a sheep pronucleus.
The Sheep egg has been fertilized and is about to divide for the first time.
The microinjection needle is delivering genetically modified DNA to the nucleus.
If successful, this GM DNA will be incorporated into the nucleus DNA and will appear
in every cell that divides afterwards, eventually resulting in a GM sheep.
GM can be used to combine genes
from different organisms
without breeding
What do you think?
When is GM ok?
If you cannot see the diamond nine image file on this page, you can find it on the Gene Jury website (GM diamond nine page).