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NF-2 Getting rid of half the monster

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NF-2er:
 Hi;

   In thinking about herditary diseases and that 50% of NF-2 cases are inherited, I wonder if scientists have ever experimented with the below? There is currently a shark in a zoo which was found to be pregnant. Sharks do not cross breed ( no case ever reported ), so, how did the female develop this now nearly fully developed shark yet in her uterus? Thoughts?
   
   NF-2er



Parthenogenesis
In parthenogenesis ("virgin birth"), the females produce eggs, but these develop into young without ever being fertilized.

Parthenogenesis occurs in some fishes, several kinds of insects, and a few species of frogs and lizards. It does not normally occur in mammals because of their imprinted genes. However, using special manipulations to circumvent imprinting, laboratory mice have been produced by parthenogenesis. [Link]

NF-2er:
Hi;

   Just wondering if my point wasn't well made to be understood?

   NF-2er

tony:
Something we have to get used to - such a rare condition
insight and understanding is rare too
- dont get me wrong, plenty of sympathy and well wishes here
But to really understand NF2 and the genes thing you
seem to need to spend most of one lifetime studying it.
Answer to question : there is a possible answer
in the human cases of new/founders
the fault line in the gene/chrome assembly is said to happen
very early as the eggs/cells are dividing - maybe 1-36 hrs old
The fault isnt inherited - it creates itself during the growing process
- it may then be passed on to the next generation
I dont entirely go with the 50/50 passed on numbers either
- at roughly 1:40,000 the numbers are currently just TOO small
to have that kind of pass-on rate
In Theorey you would reach a point where 1 in 10 or more
would have the problem - and quite quickly
We do not have the whole puzzel yet
On that happy note....
Have good weekend !
Tony

Windsong:
Gawd knows was my first answer to the first post on this thread, and then I thought hmmmmm....  mice too?.... amazing truly.....
then i figured genetics  and more study focused on time would maybe find the answer....

Gennysmom:
How about that sharks lay eggs so they don't have uteruses in the sense of how we think uteruses are?

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