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The brains of identical twins are genetically identical.

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The brains of identical twins are genetically identical. [#permalink] New post 17 Jul 2004, 14:16
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A
B
C
D
E

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The brains of identical twins are genetically identical. When only one of a pair of identical twins is a schizophrenic, certain areas of the affected twin’s brain are smaller than corresponding areas in the brain of the unaffected twin. No such differences are found when neither twin is schizophrenic. Therefore, this discovery provides definitive evidence that schizophrenia is caused by damage to the physical structure of the brain

103. If the statements on which the conclusion above is based are all true, each of the following could be true EXCEPT:

(A) People who lack a genetic susceptibility for the disease will not develop schizophrenia
(B) Medications can control most of the symptoms of schizophrenics share many of the characteristics found in those of people without the disorder
(C) The brains of schizophrenics share many of the characteristics found in those of people without the disorder
(D) It will eventually be possible to determine whether or not someone will develop schizophrenia on the basis of genetic information alone
(E) Brain abnormalities associated with schizophrenia are the result of childhood viral infections that inhibit the development of brain cells
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 [#permalink] New post 17 Jul 2004, 14:27
D?

If "..definitive evidence that schizophrenia is caused by damage to the physical structure of the brain " then, we can not say that it will be determined someone will develop schizophrenia on the basis of genetic information alone.

my 2 cents.....
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 [#permalink] New post 17 Jul 2004, 15:02
B on this one.

Nothing is mentioned in the argument abt. medications...and hence take a guess on this.
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 [#permalink] New post 17 Jul 2004, 17:46
good to hear this 'schizophrenia' word after a long time :)

D on this one. first, I stumbled, but then, ye, D is the best.

Information states that Brain structure determines whether a newborn is schizophrenic. So until the child is born, we won't know. Atleast not on the basis of this paragraph.

In B, the sentence itself doesn't make sense. I think, it is a copy-paste mistake.
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 [#permalink] New post 17 Jul 2004, 18:51
C – damage to physical structure causes schizophrenia (S)
E1 – In 2 identical brains when one has S certain areas of brain are smaller
E3 – no difference when no S in identical brains

A – we don’t know it could be true that one who is genetically not prone to S will not develop S
B- we don’t know it could be true that medication could control the symptoms of S
C- we don’t know it could be true that brains of S may share many characteristics with normal people
E- we don't know it could be true that childhood infections could cause S

D - Finally it will be possible to find if someone will develop S from genetic information only.

I chose D because it strongly states that S will be developed only on the basis of genetic information. This statement is “falseâ€
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 [#permalink] New post 18 Jul 2004, 23:53
1 min & D. I don't really understand B because of its language, anyway I know it isn't the ans
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 [#permalink] New post 19 Jul 2004, 01:54
It's an except question, IMO (A) should be the answer.

I feel (D) is wrong, because in the argument size of brain of twins is compared, now by doing this it might be possible that in future using this small size as basis of measurement we can determine whether a person suffers from Schizophrenia
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 [#permalink] New post 19 Jul 2004, 03:20
Just a thought. for those who have answered this question...

Are you convinced that the rest four options could all be true?

What if one removes the word EXCEPT from the question?

A vauge thought...just see if it makes any sense...
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 [#permalink] New post 19 Jul 2004, 07:54
The OA is D
  [#permalink] 19 Jul 2004, 07:54
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