differ in [gmatprep 700+ question]

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voodoo_child: Master | Next Rank: 500 Posts; Posts: 405; Joined: Thu Feb 10, 2011 1:44 amFollowed by: 1 member; Thanked: 3 times

by voodoo_child » Sun Jun 05, 2011 9:20 am

The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern ....

I think the idiom usage here is "differ from" ? Any help is appreciated....

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Source: Beat The GMAT — Sentence Correction | Sun Jun 05, 2011 9:20 am

cans: Legendary Member; Posts: 1309; Joined: Mon Apr 04, 2011 5:34 amFollowed by: 123 members; Location: India; Thanked: 310 times; GMAT Score:750

by cans » Sun Jun 05, 2011 9:27 am

IMO A

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Frankenstein: Legendary Member; Posts: 1448; Joined: Tue May 17, 2011 9:55 amFollowed by: 53 members; Location: India; Thanked: 375 times

by Frankenstein » Sun Jun 05, 2011 9:34 am

voodoo_child wrote:The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern .... I think the idiom usage here is "differ from" ? Any help is appreciated....

Hi,
It is differ+prepositional phrase+in... form.
The phrase 'from those...Sciuridae' is prepositional phrase. I hope this is what you are looking for.

Cheers!

Things are not what they appear to be... nor are they otherwise

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voodoo_child: Master | Next Rank: 500 Posts; Posts: 405; Joined: Thu Feb 10, 2011 1:44 amFollowed by: 1 member; Thanked: 3 times

by voodoo_child » Sun Jun 05, 2011 10:04 am

Frankenstein wrote:
voodoo_child wrote:The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern .... I think the idiom usage here is "differ from" ? Any help is appreciated....
Hi,
It is differ+prepositional phrase+in... form.
The phrase 'from those...Sciuridae' is prepositional phrase. I hope this is what you are looking for.

not sure.... but i think the idiom form is "the parachute like membranes differ from X ..." e.g. John's hair differs from that of Harry's....Why do you need "in" form here ?

Voodoo

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Frankenstein: Legendary Member; Posts: 1448; Joined: Tue May 17, 2011 9:55 amFollowed by: 53 members; Location: India; Thanked: 375 times

by Frankenstein » Sun Jun 05, 2011 10:14 am

voodoo_child wrote:
Frankenstein wrote:
voodoo_child wrote:The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern .... I think the idiom usage here is "differ from" ? Any help is appreciated....
Hi,
It is differ+prepositional phrase+in... form.
The phrase 'from those...Sciuridae' is prepositional phrase. I hope this is what you are looking for.
not sure.... but i think the idiom form is "the parachute like membranes differ from X ..." e.g. John's hair differs from that of Harry's....Why do you need "in" form here ?

Voodoo

Hi,
I have posted that because you stated that you were not able to recognize 'differ...in ' form.
I was not saying differs is followed immediately by 'in ...'. It is 'differ from... in that...' the part after 'in that' explains how they differ.

Cheers!

Things are not what they appear to be... nor are they otherwise

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voodoo_child: Master | Next Rank: 500 Posts; Posts: 405; Joined: Thu Feb 10, 2011 1:44 amFollowed by: 1 member; Thanked: 3 times

by voodoo_child » Sun Jun 05, 2011 12:32 pm

Hi,
I have posted that because you stated that you were not able to recognize 'differ...in ' form.
I was not saying differs is followed immediately by 'in ...'. It is 'differ from... in that...' the part after 'in that' explains how they differ.

[/quote]

If you read Ron's response, he says that we should eliminate a and b because of idiom issue. I am not following it.... I do read non-underlined portion but this time it simply went tangent

https://www.manhattangmat.com/forums/post20133.html

Thanks
Voodoo

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nafiul9090: Master | Next Rank: 500 Posts; Posts: 226; Joined: Thu Nov 25, 2010 12:19 amFollowed by: 2 members; Thanked: 3 times

by nafiul9090 » Mon Jun 06, 2011 11:29 pm

whats the oa and why??

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sjmit4: Junior | Next Rank: 30 Posts; Posts: 10; Joined: Sun Jan 10, 2010 4:52 am; GMAT Score:710

by sjmit4 » Mon Jun 06, 2011 11:44 pm

I think its option D

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Shifa@CrackVerbal: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Tue May 31, 2011 1:06 amFollowed by: 4 members

by Shifa@CrackVerbal » Tue Jun 07, 2011 12:46 am

voodoo_child wrote:The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern .... I think the idiom usage here is "differ from" ? Any help is appreciated....

Options A & B can be eliminated due to incorrect idiom usage. The correct idiom is 'differ+in'.
We are left with C,D & E.
C & E can be eliminated by using the concept of paralellism. In the case of C, 'being attached' and 'attachment' are not parallel. In E, there should be an 'at'before 'the wrist', and not a 'for'.
D is the correct answer option due to correct idiom usage and parallel structure.

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iongmat: Master | Next Rank: 500 Posts; Posts: 193; Joined: Tue May 24, 2011 5:14 amFollowed by: 1 member; Thanked: 6 times

by iongmat » Tue Jun 07, 2011 1:45 am

Shifa@CrackVerbal wrote:
Options A & B can be eliminated due to incorrect idiom usage. The correct idiom is 'differ+in'.

Oh no; this has nothing to do with "differ in" being a correct idiom. The correct idiom is "differ from" and that is in the non-underlined portion. The reason A and B do not fit in is because in these scenarios "because" does not fit in (not that the idiom per se is wrong).

For example, following is plain wrong:

He is very versatile because he plays hockey, writes books and sings.

The correct usage is:

He is very versatile in that he plays hockey, writes books and sings.

Last edited by iongmat on Tue Jun 07, 2011 7:52 am, edited 1 time in total.

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dv2020: Master | Next Rank: 500 Posts; Posts: 112; Joined: Sun Nov 08, 2009 9:39 pm; Location: Delhi; Thanked: 2 times

by dv2020 » Tue Jun 07, 2011 4:30 am

Shifa@CrackVerbal wrote:
voodoo_child wrote:The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern .... I think the idiom usage here is "differ from" ? Any help is appreciated....
Options A & B can be eliminated due to incorrect idiom usage. The correct idiom is 'differ+in'.
We are left with C,D & E.
C & E can be eliminated by using the concept of parallelism. In the case of C, 'being attached' and 'attachment' are not parallel. In E, there should be an 'at'before 'the wrist', and not a 'for'.
D is the correct answer option due to correct idiom usage and parallel structure.

agree with your explanation here but for "differ in" don't think there is idiom issue. Its important to notice that the parallelism should be checked across two sides of rather than or instead of. The other issue here is to choose between because and in that. I think in a comparison like this one "because" is not preferable as it gives the sentence a cause effect kind of feel. Whereas in "in that" we usually identify that one particular reason why something is true or exists. Hence D is the best choice. Thanks to your post I was able to recogniose parallelism issues which GMAT loves so much to test.

BTW is the source of this question really GMATprep....

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jainnikhil02: Master | Next Rank: 500 Posts; Posts: 123; Joined: Tue May 31, 2011 12:26 amFollowed by: 1 member; Location: Hyderabad; Thanked: 5 times

by jainnikhil02 » Tue Jun 07, 2011 6:08 am

IMO D

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GMATGuruNY: GMAT Instructor; Posts: 15539; Joined: Tue May 25, 2010 12:04 pmFollowed by: 1906 members; Location: New York, NY; Thanked: 13060 times; GMAT Score:790

by GMATGuruNY » Tue Jun 07, 2011 6:42 am

voodoo_child wrote:The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

I am not able to recognize "differ in" pattern .... I think the idiom usage here is "differ from" ? Any help is appreciated....

In A and E, two meanings are possible:
...attached to a cartilage rod...instead of to the wrist.
...attached to a cartilage rod at the elbow...instead of at the wrist.
Eliminate A and E.

In B, it is not clear what is being attached. Eliminate B.

In C, their attachment...being attached lacks parallelism. Eliminate C.

The correct answer is D.

Please note the idiom issue:

X because Y is used to indicate that Y causes X.
X in that Y is used to indicate that Y limits the scope of X.

D offers the correct idiom:

...the membranes...differ...in that they are attached...

In that they are attached limits the scope of how the membranes differ.
The membranes of the African family differ in this one respect: in that they are attached at the elbow rather than at the wrist.

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voodoo_child: Master | Next Rank: 500 Posts; Posts: 405; Joined: Thu Feb 10, 2011 1:44 amFollowed by: 1 member; Thanked: 3 times

by voodoo_child » Wed Jun 08, 2011 11:46 am

thanks Mitch. Your explanation makes sense. I was a bit lost because of Ron's reply @
https://www.manhattangmat.com/forums/the ... t1980.html

Can you please help me to explain this : "the correct idiomatic expression with 'differ' is 'differ in...', so a-b are out. (if you said 'differ because', you'd have to give the reason behind the genesis of the difference, not the nature of the difference itself.) that leaves c-d-e, which all contain the supposedly ambiguous pronoun - so you're stuck with it. "

I have a bad feeling that I am missing some concept.

Thanks
V

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saxenashobhit: Senior | Next Rank: 100 Posts; Posts: 52; Joined: Sat Aug 07, 2010 8:53 pmFollowed by: 1 member; Thanked: 1 times

by saxenashobhit » Thu Jun 09, 2011 7:48 am

voodoo_child wrote:thanks Mitch. Your explanation makes sense. I was a bit lost because of Ron's reply @
https://www.manhattangmat.com/forums/the ... t1980.html

Can you please help me to explain this : "the correct idiomatic expression with 'differ' is 'differ in...', so a-b are out. (if you said 'differ because', you'd have to give the reason behind the genesis of the difference, not the nature of the difference itself.) that leaves c-d-e, which all contain the supposedly ambiguous pronoun - so you're stuck with it. "

I have a bad feeling that I am missing some concept.

Thanks
V

Differ because - this is giving reason for the existence of difference. This usuage doesn't show "what" the difference is.

I will say following while using "differ because"
My quant and verbal score differ because I had strong foundation in quant.

Differ in - this shows what the differences are.

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