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Recently documented examples of neurogenesis, the production of new br

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Re: Recently documented examples of neurogenesis, the production of new br  [#permalink]

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New post 20 Jun 2017, 11:01
ankursethi297 wrote:
What is wrong with D.
I rejected E as it stated "neuron growth in canaries that sing", which seems to alter the meaning.


souvik101990 please suggest.



Hello ankursethi297,

I would be glad to help you with this query. :)

Let's take a look at Choice D: the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they

The pronoun they in this choice grammatically refers to neurons, suggesting that the neurons learn new songs. Logically, they must refer to canaries'. But because canaries' appears in this choice in possessive form, the non-possessive pronoun they cannot refer to the possessive noun canaries' because possessive nouns act as an adjective.

Also, this choice seems to suggest that the brain growth in mice is placed in a stimulating environment. This meaning is certainly illogical.


Hope this helps. :-)
Thanks.
Shraddha
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Re: Recently documented examples of neurogenesis, the production of new br  [#permalink]

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New post 20 Dec 2017, 22:47
dear GMAT Ninja
I got this wrong. But, after that I find the use of WHEN is incorrect in all the first four options. Will it be deterministic error or can we really eliminate all 4 on the basis of wrong use of WHEN.
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Re: Recently documented examples of neurogenesis, the production of new br  [#permalink]

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New post 28 Dec 2017, 06:59
dhnjy wrote:
dear GMAT Ninja
I got this wrong. But, after that I find the use of WHEN is incorrect in all the first four options. Will it be deterministic error or can we really eliminate all 4 on the basis of wrong use of WHEN.


No, a wrong answer cannot be eliminated because of use of "when".

Option D is eliminated not because "when" is used, but because parallelism is lost.

In option D, "when placed in a stimulating environment" comprises of a participle ("placed"), whereas "when they learn new songs" comprises of a clause. D would be better if the last part were as follows: "when learning new songs" (participle instead of clause.)

Moreover "increase in Neurons IN CANARIES" in E (rather than "increase in canaries' neurons)" in D goes better with "brain growth IN MICE"

Another problem with D is that the subject pronoun "they" refers to the possessive antecedent "canaries' "
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Re: Recently documented examples of neurogenesis, the production of new br  [#permalink]

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New post 24 Jul 2018, 06:59
1
I had a theory in mind when I was solving this question.
Complex gerunds can be parallel with action nouns only, and not with simple gerunds or concrete nouns. Examples of production of brain cells qualifies as action noun, and therefore can be parallel with a complex gerund or action noun only.
Does the answer satisfy the above theory?
DmitryFarber ChrisLele egmat sayantanc2k daagh
Re: Recently documented examples of neurogenesis, the production of new br &nbs [#permalink] 24 Jul 2018, 06:59

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