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In a cardboard representation of nucleotide subunits, Watson and Crick

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In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post Updated on: 04 Oct 2018, 21:02
8
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A
B
C
D
E

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  95% (hard)

Question Stats:

33% (00:57) correct 67% (01:20) wrong based on 214 sessions

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In a cardboard representation of nucleotide subunits, Watson and Crick, elaborating on other scientists’ theories which had failed to explain the nucleotide structures and pairings in their entirety,accurately modeled the double-helix DNA.

(A) elaborating on other scientists’ theories which had failed to explain the nucleotide structures and pairings in their entirety,
(B) elaborating on other scientists’ theories failed to explain the nucleotide structures and pairings in their entirety,
(C) elaborating on other scientists’ theories which have failed to explain the nucleotide structures and pairings in their entirety,
(D) elaborated on other scientists’ theories which fail to explain the nucleotide structures and pairings in their entirety,
(E) elaborated on other scientists’ theories which had failed to explain the nucleotide structures and pairings in their entirety,

Please explain which verb-ing form / verb-ed form will be used in the above answer?

Also explain the reasoning behind. Thanks in advance!

Please explain the rules for present participle in case a noun phrase is preceding?

Originally posted by yuktipoddar on 04 Oct 2018, 18:20.
Last edited by Bunuel on 04 Oct 2018, 21:02, edited 3 times in total.
Renamed the topic, edited the question and added the OA.
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 04 Oct 2018, 18:41
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Hey yuktipoddar,

This is a really good example of prioritizing your decision points. This doesn't have to be a case of present versus past participles. It can be a case of tenses and complete versus incomplete sentences.

In terms of tenses, you know a few things: Watson and Crick modeled DNA - that means they did this in the past, since you have that -ed ending on modeled. That means that the scientists who came before needed to do their models before Watson and Crick did theirs. And since doing a model is something that ends, you know that process was done by the time Watson and Crick started. That means that you need "had failed" to correctly deal with that timeline. That eliminates everything except A and E.

Take a look at what happens if you have -ed in there (as it is in E): "In a cardboard representation of nucleotide subunits, Watson and Crick, elaborated on other scientists’ theories which had failed to explain the nucleotide structures and pairings in their entirety, accurately modeled the double-helix DNA." That first part (up to "entirety") would be a complete sentence if that comma wasn't there. You need that "-ing" ending in there to make it clear that you aren't trying to make a compound sentence (because if you were trying to make a compound sentence you'd need an "and" after that comma or you'd need to change "modeled" to "modeling")
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 04 Oct 2018, 20:05
"Which" begins a non essential modifier and there should be "," before it. Is that right?

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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 04 Oct 2018, 23:18
i m confused with A and E.
My pick was A. Please need help here
Thanks
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 05 Oct 2018, 11:35
guptakashish02 wrote:
i m confused with A and E.
My pick was A. Please need help here
Thanks

Verb-ed Modifiers = Modifies preceding noun or noun phrase

Hence answer must be (E)
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 05 Oct 2018, 14:05
I am still confused as to why option A is incorrect and E is. Could someone please break down why option A is incorrect?
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 05 Oct 2018, 22:38
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csaluja wrote:
I am still confused as to why option A is incorrect and E is. Could someone please break down why option A is incorrect?

Please go through the following links :

https://gmatclub.com/forum/verb-ed-modi ... 25611.html

https://e-gmat.com/blogs/verb-ed-modifi ... modifiers/
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 06 Oct 2018, 23:26
Looking at options we can see split b/w elaborating / elaborated

So here word we need to choose should act as Modifier to Watson and Crick

Ing is used for extra or more info or Result of preceding clause.
Result is not case here , also elaborating here does not get with Watson and crick here directly as iNg must make sense with subject which is not the case here

So we need to use elaborated here
b/w D and E Scientific theories are talking about past theories , we have modeled for Watson and Crick so we need to use had for scientific theories here

So E is correct answer
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 07 Oct 2018, 01:29
I don't understand why there is a coma after Watson and Crick.. The sentence doesn't entirely make sense to me. Please explain.. Thanks in advance :)
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick  [#permalink]

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New post 07 Oct 2018, 12:49
AishwaryaV12 wrote:
I don't understand why there is a coma after Watson and Crick.. The sentence doesn't entirely make sense to me. Please explain.. Thanks in advance :)



You need a comma as " elaborated on other scientists’ theories which had failed to explain the nucleotide structures and pairings in their entirety, " is modifying the watson & cack.
otherwise you may have 2verbs ..for a subject ...which indeed u can change by adding "and " in between.
And the verb "accurately modeled"(ie adverb+verb) is the verb in action.

Hope it helps
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Re: In a cardboard representation of nucleotide subunits, Watson and Crick &nbs [#permalink] 07 Oct 2018, 12:49
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