When the technique known as gene-splicing was invented in : GMAT Sentence Correction (SC)
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When the technique known as gene-splicing was invented in

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When the technique known as gene-splicing was invented in [#permalink]

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New post 27 Jun 2007, 23:19
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When the technique known as gene-splicing was invented in the early 1970’s, it was feared that scientists might inadvertently create an “Andromeda strain,” a microbe never before seen on Earth that might escape from the laboratory and it would kill vast numbers of humans who would have no natural defenses against it.

(A) it would kill vast numbers of humans who would have no natural defenses against it
(B) it might kill vast numbers of humans with no natural defenses against it
(C) kill vast numbers of humans who would have no natural defenses against it
(D) kill vast numbers of humans who have no natural defenses against them
(E) kill vast numbers of humans with no natural defenses against them
[Reveal] Spoiler: OA

Last edited by carcass on 13 Nov 2016, 12:47, edited 1 time in total.
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 27 Jun 2007, 23:57
bmwhype2 wrote:
924. When the technique known as gene-splicing was invented in the early 1970’s, it was feared that scientists might inadvertently create an “Andromeda strain,” a microbe never before seen on Earth that might escape from the laboratory and it would kill vast numbers of humans who would have no natural defenses against it.
(A) it would kill vast numbers of humans who would have no natural defenses against it
(B) it might kill vast numbers of humans with no natural defenses against it
(C) kill vast numbers of humans who would have no natural defenses against it
(D) kill vast numbers of humans who have no natural defenses against them
(E) kill vast numbers of humans with no natural defenses against them


I pick D.
A,B out. (parallelism)
C,E means (as much as I understand) 'no humans have any natural defence against it', which I think is not the intended meaning.

D is the best.
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 28 Jun 2007, 00:04
bmwhype2 wrote:
924. When the technique known as gene-splicing was invented in the early 1970’s, it was feared that scientists might inadvertently create an “Andromeda strain,” a microbe never before seen on Earth that might escape from the laboratory and it would kill vast numbers of humans who would have no natural defenses against it.
(A) it would kill vast numbers of humans who would have no natural defenses against it
(B) it might kill vast numbers of humans with no natural defenses against it
(C) kill vast numbers of humans who would have no natural defenses against it
(D) kill vast numbers of humans who have no natural defenses against them
(E) kill vast numbers of humans with no natural defenses against them


D,E - out 'them' doesn't refer back to 'a microbe'

A,B,C

B - 'with no' - changes the meaning - out
A,C - tough one to choose

Going with A

C - 'kill' doesn't sound right in this sentense.
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 28 Jun 2007, 02:01
Stuck between A and C , I would go for C.

A ==> a microbe that might escape and it would kill (does not sound good)
C ==> a microbe that might escape and kill
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 28 Jun 2007, 02:02
Chose A.
In C:
scientists might inadvertently create an “Andromeda strain,” ...and kill vast vast numbers of ....
doesn't sounds right. It's not scientists who are going to kill but microbe..
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 22 Jan 2017, 20:32
Hi,
I also pick the wrong one and realize my mistake later.

The underline portion refers to " a microbe".
a microbe[never before seen on Earth]that might escape from the laboratory and it would kill vast numbers of humans who would have no natural defenses against it.
The above noun phrase is a noun modifier of "an “Andromeda strain".Here,the parallelism comes into play;a microbe that might escape and (that might) kill.

Notice that there is no comma before "and".Hence,the subject of these two verbs--"escape" and "kill"--is the same.This leave us with option C,D and E.

However,the latter two options have the pronoun error,using "them" to refer to singular noun "a microbe".
Thus,the answer is option C.

Hi all,if anything is wrong,please feel free to correct me
Happy learning :-)
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 23 Jan 2017, 00:30
When the technique known as gene-splicing was invented in the early 1970’s, it was feared that scientists might inadvertently create an “Andromeda strain,” a microbe never before seen on Earth that might escape from the laboratory and it would kill vast numbers of humans who would have no natural defenses against it.

(A) it would kill vast numbers of humans who would have no natural defenses against it - Parallelism issue - and it would kill
(B) it might kill vast numbers of humans with no natural defenses against it - Parallelism issue - and it would kill ; lack would and thus do not express the conditional.

(C) kill vast numbers of humans who would have no natural defenses against it - Correct
(D) kill vast numbers of humans who have no natural defenses against them - Pronoun issue - them used to refer to singular microbe ; lack would and thus do not express the conditional.
(E) kill vast numbers of humans with no natural defenses against them - Pronoun issue - them used to refer to singular microbe ; lack would and thus do not express the conditional.


Answer C
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 26 Jan 2017, 10:49
As per rule : The helping verb would expresses the future from the past's point of view.
Why A is wrong? What's the difference between 'it would kill vast' and 'kill vast'
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When the technique known as gene-splicing was invented in [#permalink]

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New post 27 Jan 2017, 04:26
kanusha wrote:
As per rule : The helping verb would expresses the future from the past's point of view.
Why A is wrong? What's the difference between 'it would kill vast' and 'kill vast'
Thanks


Four major problems with option A are as follows:

1. The pronoun "it" is wrong - should be "that" in order to maintain parallelism: "that might escape and that would kill".

2. "Would" is wrong. If "might" is used for escape, the same should also be used for kill. The word "might" indicates a lower probability than he word "would". "Might escape" has a less probabilty of happening than " would kill" - this is not logical, because the microbe can kill only after it escapes. Hence probability of escaping cannot be less than the probabilty of killing.

3. Wrong punctuation:
When two independent clauses are joined, comma + and is required.
I sing, and I play.
When two verbs are joined, and ( without comma) is required.
I sing and play .
In option A, absence of comma before and indicates that two verbs are required to be joined, not two clauses. However in option A, an absolute modifier is erroneously joined with a clause:
a microbe never before seen on Earth that might escape from the laboratory : absolute modifier
it would kill vast numbers of humans.. : independent clause

4. Parallelism:
In the parallel structure X AND Y, X and Y should be structurally same. As already described above, an absolute modifier has been wrongly made parallel with an independent clause.

============================================================

In option C, two verbs are correctly joined with AND: .....might escape and (might) kill. (Omission of "might" is allowed in the second element, i.e. Y, by virtue of paralllism.)
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 27 Jan 2017, 06:18
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bmwhype2 wrote:
When the technique known as gene-splicing was invented in the early 1970’s, it was feared that scientists might inadvertently create an “Andromeda strain,” a microbe never before seen on Earth that might escape from the laboratory and it would kill vast numbers of humans who would have no natural defenses against it.

(A) it would kill vast numbers of humans who would have no natural defenses against it
(B) it might kill vast numbers of humans with no natural defenses against it
(C) kill vast numbers of humans who would have no natural defenses against it
(D) kill vast numbers of humans who have no natural defenses against them
(E) kill vast numbers of humans with no natural defenses against them


humans did not have defenses against microbe and microbe is singular subject and needs to be referred by it not them...............thereby ruling out options d and e.
paralellism is flawed in options A and B.
It should be M might escape and kill
neither M might escape and it would kill
nor M might escape and it might kill
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Re: When the technique known as gene-splicing was invented in   [#permalink] 27 Jan 2017, 06:18
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