what is the basic idea used to clone Dolly... and if clonning succeded in sheeps , what it cannot succed in humans??
2006-12-04 19:35:57 · 9 answers · asked by malaysia 2 in Science & Mathematics ➔ Biology
As I understand it the theory is this:
An egg (ovum) has half of the required chromosomes, the sperm cell has the other half. When the two fuse you have a full set an the cell begins to divide to eventually form the foetus. When cloning, you remove the chromosomes from the ovum and the replace it with a full set from another cell. So instead of Dolly's ovum now containg half of her chromosomes, it now contain a full set of her chromosomes. Once it is re-implanted it will begin dividing and soon you have a clone being born.
The problems with cloning humans are mostly moral and ethical and possibly even religious. Only after all these issues are resolved would we be able to entertain the technical difficulties. And it seems there are still some technical difficulties. Cloned animals seem to be less robust and have shorter longevity that normally bred animals.
2006-12-04 19:47:41 · answer #1 · answered by Anonymous · 0⤊ 0⤋
They took a female egg. They cleared some RNA/DNA/Cromosones,.. whatever was in it. They put some infomation from a live Sheep's DNA into the Egg. They managed to get the egg to start the process of turning into a Sheep.
They stuck it in a sheep,.. that sheep gave birth,.. this is what they were supposed to have done. They screwed up along the way so the cloneing process wasn't perfectly as people thought. It was supposed to be a Female's DNA in the egg,.. but they had to use a Male's DNA to patch things and get stuff started.
It is actually a natural accourence for a Female "Clone" to be born without humans getting involved or cloneing or anything like that. It is a Disorder/Disease where a daughter is born that is only her mother's information in her DNA. Because of some problems this causes she turns out shorter then her mother and posibly has physical devolopement problems.
2006-12-05 03:48:21 · answer #2 · answered by sailortinkitty 6 · 0⤊ 0⤋
The problem with cloning Dolly was that the clone aged fastter then Dolly the original sheep and it COULD succeed with people, its just nobody wants to try it on humans yet (although if I remember right someone has already cloned human cells)
2006-12-05 03:37:54 · answer #3 · answered by Anonymous · 0⤊ 0⤋
They took the nucleus of a fertilize egg out and replaced it with nucleus of a adult sheep. They have done it a lot in other animals, and some plants, the Blue Agave plant(used in blue agave tequila) are all cloned now.
So fundamentally I think it is possible(they have done it with stem cells), but I think most peoples ethics get in the way. And if someone did try(and I mean really try) they probably wouldn't tell the world anyway.
2006-12-05 03:38:53 · answer #4 · answered by icman87 3 · 0⤊ 0⤋
they took an ovum (unfertilized egg) from one a ewe and discarded its nucleus
they extracted the nucleus from a cell taken from the udder of another ewe and they then inserted the nucleus from the second ewe into the ovum cell from the first ewe (producing a zygote)
the cell was then planted into the uterus of a third ewe
dolly was then born 5 months later
bear in mind though, that it took well over 250 attempts before being successful with Dolly
and didnt she die in the end?
I doubt human cloning will ever happen, due to ethics etc...
2006-12-05 04:42:47 · answer #5 · answered by town_cl0wn 4 · 0⤊ 0⤋
It can succeed in humans, but it has been deemed illegal. Rent Gattaca the movie. It basically shows what society would be like if we were allowed to clone and pick our children. It would jump us along in evolution for sure, but a lot of feelings would get hurt... and we can't have that.
2006-12-05 03:39:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
you know,cloning is not "briefly".steps:1:synchronizing estrus and ovulation for a group of females;
2:preparing cytoplastes;
3:preparing nuclei donor somatic cells by cultivating them "in vitro" after prelevation from adult bodies
4syncronizing cellalar cycle of all the cultivated cells
5:fusion of the nuclea doner cells with the cytoplastes (empty cells)
6:in vitro cultivation of the new embryos
7:implantation of the embryos in the uterus
as briefly as i could
2006-12-05 04:00:49 · answer #7 · answered by jasmine 2 · 0⤊ 0⤋
As Shadow said, it wasn't a complete sucess. It is probably ethics rather than science that has stopped it in humans. I, personally, hope that never changes. The fact that we can do something doesn't mean we have to.
2006-12-05 03:48:21 · answer #8 · answered by Anonymous · 1⤊ 0⤋
using genetics and stuff! in a nutshell.
cloning people is bad.
2006-12-05 03:38:12 · answer #9 · answered by Jessy 5 · 0⤊ 0⤋