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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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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

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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, 00:57
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, 01:04
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, 03:01
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, 03:02
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, 21:32
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, 01:30
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, 11:49
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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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, 07:18
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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]

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New post 18 Apr 2017, 16:03
Hello Experts
Nevernevergiveup, sayantanc2k, Skywalker18, msk0657, Abhishek009, mikemcgarry, GMATNinjaTwo, souvik101990, Gnpth, sallysea, GMATNinja, dentobizz, Nightfury14, ziyuen, MacFauz, carcass, chetan2u, yezz, Narenn, daagh

Do any of you have any comments regarding numbers of?
Is this phrase correct and if so when to use it compared with number of

another question with similar issue: https://gmatclub.com/forum/new-jerseys- ... 81139.html

I am not able to wrap my head around this phrase - i though number of is the ONLY acceptable form!!!
So please shed some light on this issue.
Thanks a lot in advance. :-)
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When the technique known as gene-splicing was invented in [#permalink]

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New post 18 Apr 2017, 19:18
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manishtank1988 wrote:
Hello Experts
Nevernevergiveup, sayantanc2k, Skywalker18, msk0657, Abhishek009, mikemcgarry, GMATNinjaTwo, souvik101990, Gnpth, sallysea, GMATNinja, dentobizz, Nightfury14, ziyuen, MacFauz, carcass, chetan2u, yezz, Narenn, daagh

Do any of you have any comments regarding numbers of?
Is this phrase correct and if so when to use it compared with number of

another question with similar issue: https://gmatclub.com/forum/new-jerseys- ... 81139.html

I am not able to wrap my head around this phrase - i though number of is the ONLY acceptable form!!!
So please shed some light on this issue.
Thanks a lot in advance. :-)


manishtank1988 It is ambiguous for this problem. I would suggest you to study from Official Guide (OG) & Manhattan SC ONLY. This question is NOT from OG.

(1) The numbers of is almost always incorrect. Stick to the expression the number of.

Wrong: THE NUMBERS of dogs in Montana ARE steadily increasing.
Right: THE NUMBER of dogs in Montana IS steadily increasing.

(2) However, numbers is possible in a few contexts. If you wish to make a comparison, use GREATER than, not more than (which might imply that the quantity of numbers is larger, not the numbers themselves).

See the Idiom List for more details

Wrong: The rare Montauk beaked griffin is not extinct; its NUMBERS are now sus­pected to be much MORE than before.
Right: The rare Montauk beaked griffin is not extinct; its NUMBERS are now sus­pected to be much GREATER than before.
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 18 Apr 2017, 21:59
ziyuen wrote:
manishtank1988 wrote:
Hello Experts
Nevernevergiveup, sayantanc2k, Skywalker18, msk0657, Abhishek009, mikemcgarry, GMATNinjaTwo, souvik101990, Gnpth, sallysea, GMATNinja, dentobizz, Nightfury14, ziyuen, MacFauz, carcass, chetan2u, yezz, Narenn, daagh

Do any of you have any comments regarding numbers of?
Is this phrase correct and if so when to use it compared with number of

another question with similar issue: https://gmatclub.com/forum/new-jerseys- ... 81139.html

I am not able to wrap my head around this phrase - i though number of is the ONLY acceptable form!!!
So please shed some light on this issue.
Thanks a lot in advance. :-)


manishtank1988 It is ambiguous for this problem. I would suggest you to study from Official Guide (OG) & Manhattan SC ONLY. This question is NOT from OG.

(1) The numbers of is almost always incorrect. Stick to the expression the number of.

Wrong: THE NUMBERS of dogs in Montana ARE steadily increasing.
Right: THE NUMBER of dogs in Montana IS steadily increasing.

(2) However, numbers is possible in a few contexts. If you wish to make a comparison, use GREATER than, not more than (which might imply that the quantity of numbers is larger, not the numbers themselves).

See the Idiom List for more details

Wrong: The rare Montauk beaked griffin is not extinct; its NUMBERS are now sus­pected to be much MORE than before.
Right: The rare Montauk beaked griffin is not extinct; its NUMBERS are now sus­pected to be much GREATER than before.


Got it, thanks ziyuen :cool
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Re: When the technique known as gene-splicing was invented in [#permalink]

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New post 18 Apr 2017, 23:45
ANS C)
The SV pair is correct.


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

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The guiding principle is that if a number is a potentially dynamic one changing very often, then numbers will be the one. For example, if we are reporting on the ever-changing index figure of Nasdaq on a particular day, we cannot perhaps denote it with a particular number or at a particular number.
On the contrary, if we want to report at 11.00 am the number of students who took the GMAT on a given date at a particular center, one hour after entry is closed, then that figure could be reported as 'the number' as that number is not going to change. So the usage is more contextual rather than conceptual.
But, The given topic doesn't entail a discussion on this issue as all the five choices have the word 'numbers'. However, to generalize that the number or a number is the only acceptable form is rather to overreach. If that were so, GMAT would not have used it elsewhere as given below.
1. The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970’s. (OG verbal review)

(A) extinction; its numbers are now five times greater than
(B) extinction; its numbers are now five times more than
(C) extinction, their numbers now fivefold what they were
(D) extinction, now with fivefold the numbers they had
(E) extinction, now with numbers five times greater than
Ans A.

2. With an awareness that there are connotations associated with the numbers 1 and 2 and the letters A and B, companies conducting consumer taste tests of foods or beverages typically choose numbers such as 697 or 483 to label the products. (GMAT Prep)

(A) With an awareness that there are connotations associated with the numbers 1 and 2 and the letters A and B
(B) Because the numbers 1 and 2 and the letters A and B have connotations they are aware of
(C) Because of an awareness of the numbers 1 and 2 and the letters A and B having connotations
(D) Aware of the connotations of the numbers 1 and 2 and the letters A and B
(E) Since the numbers one, two, and the letters A and B have connotations associated with them and they are aware of it

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

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New post 20 Apr 2017, 19:30
daagh wrote:
The guiding principle is that if a number is a potentially dynamic one changing very often, then numbers will be the one. For example, if we are reporting on the ever-changing index figure of Nasdaq on a particular day, we cannot perhaps denote it with a particular number or at a particular number.
On the contrary, if we want to report at 11.00 am the number of students who took the GMAT on a given date at a particular center, one hour after entry is closed, then that figure could be reported as 'the number' as that number is not going to change. So the usage is more contextual rather than conceptual.
But, The given topic doesn't entail a discussion on this issue as all the five choices have the word 'numbers'. However, to generalize that the number or a number is the only acceptable form is rather to overreach. If that were so, GMAT would not have used it elsewhere as given below.
1. The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970’s. (OG verbal review)

(A) extinction; its numbers are now five times greater than
(B) extinction; its numbers are now five times more than
(C) extinction, their numbers now fivefold what they were
(D) extinction, now with fivefold the numbers they had
(E) extinction, now with numbers five times greater than
Ans A.

2. With an awareness that there are connotations associated with the numbers 1 and 2 and the letters A and B, companies conducting consumer taste tests of foods or beverages typically choose numbers such as 697 or 483 to label the products. (GMAT Prep)

(A) With an awareness that there are connotations associated with the numbers 1 and 2 and the letters A and B
(B) Because the numbers 1 and 2 and the letters A and B have connotations they are aware of
(C) Because of an awareness of the numbers 1 and 2 and the letters A and B having connotations
(D) Aware of the connotations of the numbers 1 and 2 and the letters A and B
(E) Since the numbers one, two, and the letters A and B have connotations associated with them and they are aware of it

Ans: D


Thanks daagh
Re: When the technique known as gene-splicing was invented in   [#permalink] 20 Apr 2017, 19:30
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