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# QOTD #39 Children whose biological parents both have Tic Syndrome Z (T

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QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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17 Dec 2017, 15:32
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73% (01:20) correct 27% (01:34) wrong based on 171 sessions

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Children whose biological parents both have Tic Syndrome Z (TSZ), which is characterized by the involuntary contraction of certain muscles, are about four times more likely to develop such contractions than are children whose biological parents do not have TSZ, It is likely, therefore, that predisposition to TSZ is an inherited trait.

Which of the following, if true, would most strengthen the conclusion above?

(A) Children whose parents have TSZ are more likely to develop TSZ if they are under unusual stress at school or at home than if they are not under such stress.
(B) Children whose biological parents do not have TSZ are more likely to develop TSZ if they are raised by adoptive parents with TSZ than if they are raised by their biological parents.
(C) Children whose biological parents have TSZ are as likely to develop TSZ if they are raised by adoptive parents who do not have TSZ as if they are raised by their biological parents.
(D) Children whose biological parents have TSZ and who develop TSZ usually avoid developing a severe form of the syndrome if they seek treatment for TSZ shortly after developing the first signs of it.
(E) Children with TSZ whose biological parents do not have TSZ are less likely to have the syndrome diagnosed when symptoms first appear than are children with TSZ whose biological parents have TSZ.

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Re: QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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17 Dec 2017, 15:45
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The explanation would be kind.

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Re: QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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17 Dec 2017, 19:57
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IMO C. Conclusion states tendency to have TSZ is inherited. So, anything that strengthens this is correct. C does this by saying if adoptive parents raise children whose biological parents had TSZ, the children are as likely to develop the syndrome

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QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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Updated on: 18 Dec 2017, 22:41
carcass wrote:

Children whose biological parents both have Tic Syndrome Z (TSZ), which is characterized by the involuntary contraction of certain muscles, are about four times more likely to develop such contractions than are children whose biological parents do not have TSZ, It is likely, therefore, that predisposition to TSZ is an inherited trait.

Which of the following, if true, would most strengthen the conclusion above?

(A) Children whose parents have TSZ are more likely to develop TSZ if they are under unusual stress at school or at home than if they are not under such stress.
This option focuses on stress - likely to be true only under stress -> OUT
(B) Children whose biological parents do not have TSZ are more likely to develop TSZ if they are raised by adoptive parents with TSZ than if they are raised by their biological parents.
It is opposite of premise -> Children( parents have TSZ) are 4times likely to develop TSZ than Children ( Parents dont have TSZ) => OUT
(C) Children whose biological parents have TSZ are as likely to develop TSZ if they are raised by adoptive parents who do not have TSZ as if they are raised by their biological parents. HOLD THIS -> Children( parents have TSZ) raised by parents( who dont have TSZ) are having same chances of developing TSZ -> In other words TSZ will be affecting children ( parents TSZ) irrespective of parents who raise them. ie with or without TSZ.
(D) Children whose biological parents have TSZ and who develop TSZ usually avoid developing a severe form of the syndrome if they seek treatment for TSZ shortly after developing the first signs of it.
Does not strengthen claim -> predisposition to TSZ is an inherited trait. {we are not interested in severe form of syndrome} => OUT
(E) Children with TSZ whose biological parents do not have TSZ are less likely to have the syndrome diagnosed when symptoms first appear than are children with TSZ whose biological parents have TSZ.
Does not strengthen claim -> We are not interested in diagnosing symptom -> but our motto is something else.-> to strengthen -predisposition to TSZ is an inherited trait.=> OUT

IMO C
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Originally posted by sahilvijay on 17 Dec 2017, 23:06.
Last edited by sahilvijay on 18 Dec 2017, 22:41, edited 6 times in total.
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Re: QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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17 Dec 2017, 23:39
C is not correct because it simply says children whose parents have TSZ have the same likelihood of developing the syndrome whether they are raised by biological or adoptive parents. This does not strengthen the conclusion that TSZ is likely inherited.

E on the other hand says children whose parents have the trait are more likely to develop the syndrome than those whose parents didn't. Hence the correct answer.

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Re: QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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18 Dec 2017, 03:21
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IMO.
C must be the correct answer.

E states that TSZ, in children whose biological parents do not have the illness, goes undiagnosed. This implies that even children whose biological parents don't have TSZ posses the illness but it is not diagnosed at times. This is contradicting our conclusion that TSZ is inherited trait.
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Re: QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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18 Dec 2017, 03:54
C for me.This question doesn't looks like of 700+ category.
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QOTD #39 Children whose biological parents both have Tic Syndrome Z (T  [#permalink]

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18 Dec 2017, 06:25
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carcass wrote:

Children whose biological parents both have Tic Syndrome Z (TSZ), which is characterized by the involuntary contraction of certain muscles, are about four times more likely to develop such contractions than are children whose biological parents do not have TSZ, It is likely, therefore, that predisposition to TSZ is an inherited trait.

Which of the following, if true, would most strengthen the conclusion above?

(A) Children whose parents have TSZ are more likely to develop TSZ if they are under unusual stress at school or at home than if they are not under such stress.
(B) Children whose biological parents do not have TSZ are more likely to develop TSZ if they are raised by adoptive parents with TSZ than if they are raised by their biological parents.
(C) Children whose biological parents have TSZ are as likely to develop TSZ if they are raised by adoptive parents who do not have TSZ as if they are raised by their biological parents.
(D) Children whose biological parents have TSZ and who develop TSZ usually avoid developing a severe form of the syndrome if they seek treatment for TSZ shortly after developing the first signs of it.
(E) Children with TSZ whose biological parents do not have TSZ are less likely to have the syndrome diagnosed when symptoms first appear than are children with TSZ whose biological parents have TSZ.

Child whose parents BOTH have TSZ = involuntary control of muscles >> have 4x chance of develop such contracts than Child whose parents don’t have TSZ >> So, likelihood of having TSZ is an inherited.

a) Child with TSZ parents are more like to get TSZ if they are stressed >> doesn’t explain y its inherited..
b) Child with non-TSZ parents are more like to get TSZ from TSZ not-parents >> this would weaken.. its saying TSZ can be developed from something else other than inherited..
c) Child with TSZ parents are likely to have TSZ if they are raised by non-TSZ not-parents or by TSZ parents >> so “maybe” its inherited…
d) Out of scope.. doesn’t explain if TSZ is mostly inherited or else..
d) Out of scope.. doesn’t explain if TSZ is mostly inherited or else..

(C) i think is the answer.
QOTD #39 Children whose biological parents both have Tic Syndrome Z (T &nbs [#permalink] 18 Dec 2017, 06:25
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