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Biologists believe that they have found one of the substance

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Biologists believe that they have found one of the substance

by simplyjat » Mon May 05, 2008 12:47 am
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

OA A
What is the rule for "one of X" construction? Is it always plural?
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by zacharyz » Mon May 05, 2008 6:21 am
This is a curious question, simplyjat. I did not notice the "one of the substances tell"

but I knocked out the "tells" responses because the idiom is "both X and Y" rather than "or Y" that is offered in B-D. Between A and E, the substances are telling "now" rather than in the future, as in E.

Therefore, I chose A.

Experts - should the right answer be "One that tells xxx..." ?
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by barron » Wed May 07, 2008 2:25 am
I think E is the correct answer

As zach pointed, A and B can be discounted because 'tells' should follow the singular word 'one of the ....'

C and D can be discounted because it doesn't follow the correct idiom
both...and

E corrects all these
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by vijaysachdeva » Mon Jun 02, 2008 3:11 am
In phrases like “pistachio is one of the few flavors that appeals to me,” I think you should use the singular form for the verb “appeals” because its subject is “one,” not “flavors.” However, note that usage experts are all over the place on this subject and you’re not likely to get into much trouble by using the plural, and some authorities absolutely prefer it.

Reference: https://www.wsu.edu/~brians/errors/oneofthe.html

"tell individual genes both when to become active and when to remain" -- A

I was also trapped by E, but the explanation aforementioned suggests that 'tell' cannot be the sole criterial to discard A.
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