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Biologists believe that they have found one of the

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Manager
Manager
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Joined: 07 Jan 2008
Posts: 87

Kudos [?]: 248 [0], given: 1

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

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New post 27 Nov 2008, 22:01
00:00
A
B
C
D
E

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(N/A)

Question Stats:

0% (00:00) correct 100% (00:42) wrong based on 1 sessions

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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 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

My ans is (C) but I am not sure why (A) is the answer.

"One of the substances" is singular so it should be tells.

Kudos [?]: 248 [0], given: 1

VP
VP
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Joined: 18 May 2008
Posts: 1259

Kudos [?]: 526 [0], given: 0

Re: SC [#permalink]

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New post 27 Nov 2008, 22:13
PLS UNDERLINE THE sc QUESTIONS.

In this sentence, usage of tells is wrong. when the sentence is like this: one of the [plural] that .........then the verb is always plural. so C and D are out. E is wrong bcos it means substances tell an indivisual gene. This changes the meaning. B is wordy and awkward. So A is the best choice.

topmbaseeker wrote:
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

My ans is (C) but I am not sure why (A) is the answer.

"One of the substances" is singular so it should be tells.

Kudos [?]: 526 [0], given: 0

Re: SC   [#permalink] 27 Nov 2008, 22:13
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Biologists believe that they have found one of the

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