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Author Topic: how come you get a new gene so soon?  (Read 2604 times)

Offline omid

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how come you get a new gene so soon?
« on: 29/01/2010 18:07:16 »
Omid is doing DNA and genes in biology these days, today while learning all this one of omid's classmate said that when he was in the womb of his mother his mother was bited by a snake on the left leg and he is the one who has got that biting mark on his left leg how come? and which was the gene that transfered that mark so immediately?????


 

Offline Variola

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how come you get a new gene so soon?
« Reply #1 on: 29/01/2010 19:33:47 »
Omid.... your friend is making it up... that is not genetic transference  :)
 

Offline omid

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how come you get a new gene so soon?
« Reply #2 on: 29/01/2010 20:39:58 »
Omid.... your friend is making it up... that is not genetic transference  :)
     Nop, omid doesn't agree because he was damn serious.
 

Offline BenV

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how come you get a new gene so soon?
« Reply #3 on: 29/01/2010 20:47:49 »
In that case, I'm afraid he's been led to believe something that isn't true.

A snake bite mark would consist of scar tissue as a result of the way the body responds to damage.  As his leg wasn't the one that got damaged, the scar couldn't show up on his leg. Scars and other changes that happen after birth are not passed on genetically, so he couldn't have 'inherited' the mark from his mum.

Does anyone know if toxin from a snake bite (or the immune system response to them) could have developmental impacts on a foetus?
 

Offline omid

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how come you get a new gene so soon?
« Reply #4 on: 29/01/2010 20:58:09 »
No, he said that "he got same mark on his leg as his mother's n wen he asked his mum she told him that she was biten by snake when she was pregnant with him"                                                             so how come??????????
« Last Edit: 29/01/2010 21:00:30 by omid »
 

Offline BenV

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how come you get a new gene so soon?
« Reply #5 on: 29/01/2010 23:00:31 »
That's probably also what his mother believes, and why shouldn't she if nobody has ever told her anything different.  However, developmental effects of the toxin aside (which I honestly know nothing about), I can't see a plausable biological mechanism. It's certainly not genetically inherited.

Hopefully, someone who knows more about embryology than me will come along and help!
 

Offline Variola

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how come you get a new gene so soon?
« Reply #6 on: 30/01/2010 09:38:06 »
That's probably also what his mother believes, and why shouldn't she if nobody has ever told her anything different.  However, developmental effects of the toxin aside (which I honestly know nothing about), I can't see a plausable biological mechanism. It's certainly not genetically inherited.

Hopefully, someone who knows more about embryology than me will come along and help!

From what I understand, I don't think the venom would affect the developing foetus in terms of genetics, (see below on mice though) it would be more likely to affect it in terms of death, depending on the type of snake and dosage. And anti-venom can cause adverse allergic reactions in the foetus.

I found a paper review, see below.

http://www.wemjournal.org/wmsonline/?request=get-document&issn=1080-6032&volume=015&issue=03&page=0207


 

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how come you get a new gene so soon?
« Reply #6 on: 30/01/2010 09:38:06 »

 

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