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Most vaccines are derived from weakened or killed strains of

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Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 25 Nov 2013, 21:02
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Most vaccines are derived from weakened or killed strains of the same virus that they prevent, unlike the derivation of smallpox vaccine from a different virus altogether.

(A) the derivation of smallpox vaccine from a different virus altogether

(B) smallpox vaccine, which is derived from a different virus altogether

(C) smallpox's vaccine, which gets derived from a different virus altogether

(D) when smallpox vaccine is derived from an altogether different virus

(E) the altogether different virus from which smallpox vaccine is derived
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 25 Nov 2013, 21:09
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Hint:
What is the comparison? What is "unlike" what?

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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 26 Nov 2013, 03:28
I think "smallpox's vaccine" is incorrect, because it seems to suggest that the vaccine "belongs" to "smallpox". This is obviously incorrect.
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 26 Nov 2013, 21:00
Most vaccines are derived from weakened or killed strains of the same virus that they prevent, unlike the derivation of smallpox vaccine from a different virus altogether.

(A) the derivation of smallpox vaccine from a different virus altogether

(B) smallpox vaccine, which is derived from a different virus altogether

(C) smallpox's vaccine, which gets derived from a different virus altogether

(D) when smallpox vaccine is derived from an altogether different virus

(E) the altogether different virus from which smallpox vaccine is derived

Unlike is always followed by a noun,so we can short list B and C, C is in correct because --smallpox's vaccine, which gets derived-- Vaccine dosent gets derived itself.
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 20 Nov 2014, 02:45
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"Vaccine of smallpox" is right to use; thus, smallpox's vaccine is not wrong.

Actual problem in C is use of "gets" in the passive construction.
In passive construction we are allowed to use "to be" form of verb as used in option B.
is derived (correct)
gets derived (wrong)

Refer chapter 7, MGMAT SC guide, Active and Passive voice.
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 05 Aug 2017, 07:33
Can anyone pls help me differentiate between option B and C.

Thanks in advance.

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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 06 Aug 2017, 05:42
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kumarparitosh123 wrote:
Can anyone pls help me differentiate between option B and C.

Thanks in advance.

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Most vaccines are derived from weakened or killed strains of the same virus that they prevent, unlike the derivation of smallpox vaccine from a different virus altogether.


(B) smallpox vaccine, which is derived from a different virus altogether

(C) smallpox's vaccine, which gets derived from a different virus altogether

Hi,
here 'most vaccines' are compared with 'smallpox vaccines' .

1.smallpox's vaccines is same as 'vaccines of smallpox' , which is in passive voice therefore not parallel to 'most vaccines'.
2. Here the modifier contains a fact and should be written in simple form. In option C , the modifier is in passive voice ( which is not better than Active in this ques). As per Manhattan Sc 'Do not use other verbs besides 'be', such as get, to form the passive voice'.
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 17 Feb 2019, 23:35
Hi experts.

smallpox vaccines in choice B seems to be compared with most vaccines,the subject of the sentence.

My question is:

Can the word "unlike" after comma be used to compare with the subject of the sentence, which is really far away from the word "unlike" ?

In my opinion, it would be better if "unlike ... "clause were placed before the main sentence.

Please correct me if I'm wrong.

Thank you.
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 11 Mar 2019, 03:50
ballest127 wrote:
Hi experts.

smallpox vaccines in choice B seems to be compared with most vaccines,the subject of the sentence.

My question is:

Can the word "unlike" after comma be used to compare with the subject of the sentence, which is really far away from the word "unlike" ?

In my opinion, it would be better if "unlike ... "clause were placed before the main sentence.

Please correct me if I'm wrong.

Thank you.

When you're evaluating the usage of "unlike" there are only two factors to consider: 1) is "unlike" used to compare nouns or noun phrases? and 2) is the comparison logical?

If both criteria are met, it doesn't matter if the elements are far apart, or if the construction is "X, unlike Y," as opposed to "unlike X, Y." In this case, every option has the X, unlike Y construction, so there's no reason to exert any mental energy considering whether another construction might be better! In general, once you satisfy that you're looking at a logical comparison, you want to move on to other decision points.

I hope that helps!
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Re: Most vaccines are derived from weakened or killed strains of  [#permalink]

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New post 11 Mar 2019, 04:21
Here "Most vaccines" is being compared with smallpox vaccine.
B is the clear winner.
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Re: Most vaccines are derived from weakened or killed strains of   [#permalink] 11 Mar 2019, 04:21
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