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# Biologists believe that they have found one of the

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Biologists believe that they have found one of the [#permalink]

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28 Aug 2009, 11:56
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Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo’s development.

(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active or should remain
(C) tells individual genes both when to become active or remain
(D) tells individual genes both when to become active or when to remain
(E) will tell an individual gene both about when it should become active and remain

Kindly explain the reasoning against each option!
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Re: Brutal SC # 14: Biologists believe [#permalink]

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30 Aug 2009, 11:30
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Hussain15 wrote:
OA is "A".

Just a little query. "One of the substances" is singular (I suppose). We selected the verb form "tell". Why?? Is it because the modifier "that" is used immediately after "substances"???

here that modifies the substances because the sentences says that among the substances that tell individual genes ... Biologist believe that they have found one.

the pattern "one of the X that/who " is followed by a plural verb.

Consider this similar example

David is one of my friends who wear a hat.

Here wear is plural because refers to your friends. What I'm saying is that among my friends who wear a hat, David is one of them.
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Re: Brutal SC # 14: Biologists believe [#permalink]

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30 Aug 2009, 11:24
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"That" is a relative pronoun , so it can only refer to a single subject not a phrase or a clause
here that is refeering to substances not the phrase "one of the sbstances"
hope this helps
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Re: Brutal SC # 14: Biologists believe [#permalink]

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02 Mar 2010, 17:45
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rrkan wrote:
"That" is a relative pronoun , so it can only refer to a single subject not a phrase or a clause
here that is refeering to substances not the phrase "one of the sbstances"
hope this helps

Agree. This is the main thing that this sentence is testing. "That" describes a necessary condition of "substances", since substances is plural, the verb that modifies it must be plural, you need to use "tell" here. This leaves only (A) and (B). All of the sentences use the word "both", this requires the connector "and" as in both x and y. (B) does not use "and" so it's wrong. (C) changes the tense unneccesarily and the pronoun "it" does not have a proper antecedent, what does "it" refer to?

Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo’s development.

(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active or should remain
(C) tells individual genes both when to become active or remain
(D) tells individual genes both when to become active or when to remain
(E) will tell an individual gene both about when it should become active and remain
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Re: Brutal SC # 14: Biologists believe [#permalink]

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28 Aug 2009, 12:29
A sounds perfect.... its plural...
so c,d,e, out..... bwen A and B ....a Sounds parallel
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Re: Brutal SC # 14: Biologists believe [#permalink]

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28 Aug 2009, 13:50
I agree with the explanation above.
Substances is plural so require plural verb "tell"
so its between A and B
A has a proper parallel structure so A
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Re: Brutal SC # 14: Biologists believe [#permalink]

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28 Aug 2009, 16:01
options B, C and D have wrong idiom 'both X or Y' .
E -- not parallel.

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Re: Brutal SC # 14: Biologists believe [#permalink]

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29 Aug 2009, 08:13
OA is "A".

Just a little query. "One of the substances" is singular (I suppose). We selected the verb form "tell". Why?? Is it because the modifier "that" is used immediately after "substances"???
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Re: Brutal SC # 14: Biologists believe [#permalink]

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30 Aug 2009, 11:37
rrkan wrote:
"That" is a relative pronoun , so it can only refer to a single subject not a phrase or a clause
here that is refeering to substances not the phrase "one of the sbstances"
hope this helps

watch out because that can refer to a noun that a prepositional phrase it modifies.

Here is a controversial problem with this issue

sc-good-years-76552.html#p578212

To clarify in the sentence

the patchwork of green fields that

here that can refer to either the patchwork or green fields. Only if we know the rest of the sentence we can determine what noun that is referring to.

My apology if I misunderstood your comment.
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Re: Brutal SC # 14: Biologists believe [#permalink]

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08 Sep 2009, 19:40
Hope GMAC will not come out with this:

"the patchwork of green fields that

here that can refer to either the patchwork or green fields. Only if we know the rest of the sentence we can determine what noun that is referring to."

Way too confusing!!
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Re: Brutal SC # 14: Biologists believe [#permalink]

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18 Oct 2009, 03:43
Quote:
Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development.

(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active and should remain
(C) tells individual genes both when to become active and when to remain
(D) tells individual genes both when to activate and when to
(E) tell an individual gene both about when it should become active and when it should remain

I came up with this same question while solving Brutal bangus SC Notes.but the Option E is different .
Lets look at this again.The OA stands as
[Reveal] Spoiler:
A

"tell" is correct>C,D out.
B>incorrect.
My querie>Why is A better than the newly improved E?
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Re: Brutal SC # 14: Biologists believe [#permalink]

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26 Oct 2009, 06:43
tejal777 wrote:
Quote:
Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development.

(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active and should remain
(C) tells individual genes both when to become active and when to remain
(D) tells individual genes both when to activate and when to
(E) tell an individual gene both about when it should become active and when it should remain

I came up with this same question while solving Brutal bangus SC Notes.but the Option E is different .
Lets look at this again.The OA stands as
[Reveal] Spoiler:
A

"tell" is correct>C,D out.
B>incorrect.
My querie>Why is A better than the newly improved E?

Hi Tejal..

ur question why A not E right???

In option E... "an individual gene" is singular...."both" is plural" ..."it' again is singular.....As you can see wrong tense being employed...!!!

hope it helps.
cheers..
kyle
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Re: Brutal SC # 14: Biologists believe [#permalink]

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27 Oct 2009, 17:08
A - Correct.
B - "At which time" sounds awkward. Also, the word "should" in this case implies probability or obligation.
C - "Tells" incorrectly modifies substances.
D - See C above.
E - "Both about when" sounds awkward. Again, we see a problem with "should."
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Re: Brutal SC # 14: Biologists believe [#permalink]

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02 Mar 2010, 00:13
tejal777 wrote:
Quote:
Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development.

(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active and should remain
(C) tells individual genes both when to become active and when to remain
(D) tells individual genes both when to activate and when to
(E) tell an individual gene both about when it should become active and when it should remain

I came up with this same question while solving Brutal bangus SC Notes.but the Option E is different .
Lets look at this again.The OA stands as
[Reveal] Spoiler:
A

"tell" is correct>C,D out.
B>incorrect.
My querie>Why is A better than the newly improved E?

Believe should not be followed by SHould as in E

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Re: Brutal SC # 14: Biologists believe [#permalink]

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02 Mar 2010, 17:52
mustdoit wrote:
tejal777 wrote:
Quote:
Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development.

(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active and should remain
(C) tells individual genes both when to become active and when to remain
(D) tells individual genes both when to activate and when to
(E) tell an individual gene both about when it should become active and when it should remain

I came up with this same question while solving Brutal bangus SC Notes.but the Option E is different .
Lets look at this again.The OA stands as
[Reveal] Spoiler:
A

"tell" is correct>C,D out.
B>incorrect.
My querie>Why is A better than the newly improved E?

Believe should not be followed by SHould as in E

Consider KUDOS if you like the post !!!

"it" is vague here, does it refer to "substances" or "individual gene"? (E) is also not concise. ...about when it should become x and y.. "about" here is somewhat redundant. ....when to become x and y... is clear and concise.
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Re: Brutal SC # 14: Biologists believe [#permalink]

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22 Jun 2010, 16:40
I have a problem from the above posts why is E wrong?

a. Because 'it' is ambiguous in the sense that reference of it is not clear whether it is referring to 'substances' or 'genes'
b. believe cannot be followed by should
c. 'both about when' is not idiomatic while 'both when' is idiomatic.

Which of the above are the errors and which are not?

Second, as for OA being A how do break it down. I am not able to get the point of breaking and getting it from the rest of the sentence.

Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development.

Red ones are no need to pay attention to.
one of the substances that tell in green cannot be understood from the rest of the sentence.
How will you describe a scenario when there are 100 substances which tell something or other but only one extraordinary one of them that can describe the activity of the individual genes involved in embryo development phase. => tells is correct because that extraordinary one is singular and it then should 'tells' and not tell.
Another question is individual genes. Now what is that supposed to mean. Should I interpret it as just genes or each one of the genes. (Later sounds rubbish but is more clear to me).
I have another logic. if all substances were able to tell about all the individual genes then what the hell are biologists doing. Isn't it more obvious that some or the other substance will tell one or the other gene. Only when there is that special substance that biologist were mentioning, I would be more interested in.
Bottom line is I don't get why tell is correct and tells is incorrect based on my reasoning above.

As per the same logic to the friend wearing hat example of mikecoolboy

David is one of my friends who wear a hat.
Explanation given was: Here wear is plural because refers to your friends. What I'm saying is that among my friends who wear a hat, David is one of them.
Mine: David has a number of friends. Only few of them wear hat or non of them wear hat. In former case, I will use 'wear' but in the later case, I want to use 'wears'. Unf David was a friend of GMAC and I did not get point on Verbal.
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Re: Brutal SC # 14: Biologists believe [#permalink]

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23 Jun 2010, 05:37
A - Concidering that refers to substances and not one singular substance - Funda grasped.
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Re: Brutal SC # 14: Biologists believe [#permalink]

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23 Jun 2010, 18:45
..made the same mistake ...a in "patchwork of grenfields" .....understood now it is A
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Re: Brutal SC # 14: Biologists believe [#permalink]

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18 Jun 2011, 05:24

The subject is 'one of the substances' which is singular and so the singular verb tell is required
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Re: Brutal SC # 14: Biologists believe [#permalink]

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18 Jun 2011, 05:46
Form should be Both X and Y and not Both X or Y. This eliminates answer choices b,c,d. Between a & e, e is wordy and a is concise and clear. Hence A.
Re: Brutal SC # 14: Biologists believe   [#permalink] 18 Jun 2011, 05:46

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