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cloning problems

Discussion in '2003 Archive' started by Helen, Apr 13, 2003.

  1. Helen

    Helen <img src =/Helen2.gif>

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    We like to put on that we know so much, when in reality we know so little!

    http://www.iol.co.za/index.php?click_id=31&art_id=qw1050018123411B224&set_id=1

    Successful human cloning is 'impossible'

    April 11 2003 at 01:42AM
    Quickwire

    Washington - Successful human cloning is currently impossible because of basic
    flaws in the embryonic development of primates, according to details of a
    study published on Thursday in the journal Science.

    The study by a team of researchers from the Pittsburgh Development Centre
    observed basic molecular structures that blocked normal cell development
    despite using four different techniques of nuclear transfer.

    "The chromosomes do not split properly,", said Dr Gerald P. Schatten, senior
    author of the study. "From the very first cell division, development is
    inappropriate in vital ways."

    The study's use of DNA imaging and analysis of basic cell structure revealed
    that while cell division continued in a superficially normal manner,
    chromosomal problems existed within each individual cell.

    'We may discover how to make it work. It just doesn't work now' Problems with the mitotic spindle, which is among the key structures involved
    in cell division, were named as one of the key flaws in human cloning. The
    mitotic spindle functions to precisely align and separate chromosomes.

    However, in cells originating as a result of nuclear-transfer, examination of
    spindle configuration revealed chaotic structures and unequal chromosome
    counts. Even the most basic proteins involved in spindle formation were
    absent or inadequate, the study said.

    "Current techniques such as those used to create Dolly the sheep, mice and
    other domestic animals do not work in non-human primates," added Schatten. "I
    don't want to say that this will never happen. Given enough time and
    materials, we may discover how to make it work. It just doesn't work now." -
    Sapa-DPA
     
  2. Sherrie

    Sherrie New Member

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    Well that is a relief. I have been wondering about this. Would they tell us if they did try and it seemed to be working?

    Sherrie
     
  3. Alcott

    Alcott Well-Known Member
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    Ain't there enough problems with human beings without having to clone any?
     
  4. I Am Blessed 24

    I Am Blessed 24 Active Member

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    There is a bill, waiting to be voted on, right now to ban ALL cloning or ATTEMPTS at cloning.

    [​IMG]
    Sue
     
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