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genetic relatedness

by GmatKiss » Tue Apr 17, 2012 12:30 pm
The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably on a spectrum of genetic relatedness.

A. The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably
B. That some fraternal twins resemble each other greatly while others look quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they
vary considerably
C. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely
considerable variation
D. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is
a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a
considerable variation
E. Because some fraternal twins resemble each other greatly and others look quite dissimilar, this
fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they
vary considerably
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by Bill@VeritasPrep » Tue Apr 17, 2012 1:20 pm
The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably on a spectrum of genetic relatedness.

A. The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably
B. That some fraternal twins resemble each other greatly while others look quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they
vary considerably
C. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely
considerable variation
D. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is
a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a
considerable variation
E. Because some fraternal twins resemble each other greatly and others look quite dissimilar, this
fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they
vary considerably

B is parallel "that some fraternal...that they.." and works well.
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by GmatKiss » Tue Apr 17, 2012 1:34 pm
Why is With wrong in C and D?
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by dlencz » Tue Apr 17, 2012 4:30 pm
"With....it" is not parallel.
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by jordan23 » Wed Apr 18, 2012 3:04 am
IMO B
GmatKiss wrote:The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably on a spectrum of genetic relatedness.

A. The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably
B. That some fraternal twins resemble each other greatly while others look quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they
vary considerably
C. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely
considerable variation
D. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is
a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a
considerable variation
E. Because some fraternal twins resemble each other greatly and others look quite dissimilar, this
fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they
vary considerably -- - just more verbose
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by GMATGuruNY » Wed Apr 18, 2012 3:27 am
GmatKiss wrote:The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably on a spectrum of genetic relatedness.

A. The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably
B. That some fraternal twins resemble each other greatly while others look quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they
vary considerably
C. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely
considerable variation
D. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is
a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a
considerable variation
E. Because some fraternal twins resemble each other greatly and others look quite dissimilar, this
fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they
vary considerably
In A, the fact OF some fraternal twins makes no sense. Eliminate A.

In C and D, it lacks a clear antecedent. Eliminate C and D.

The causal relationship implied by E makes no sense: this fact highlights an interesting feature BECAUSE some fraternal twins resemble each other. The second action is not CAUSING the first. Eliminate E.

The correct answer is B.
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by bittu.0807 » Wed Apr 18, 2012 6:46 am
Hi Mitch, please explain in more details what is wrong with A?
Is VERBING not correct here?
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by GMATGuruNY » Wed Apr 18, 2012 8:30 am
bittu.0807 wrote:Hi Mitch, please explain in more details what is wrong with A?
Is VERBING not correct here?
In A, the FACT OF intends to refer to RESEMBLING, but resembling is serving as an ADJECTIVE modifying some fraternal twins. We can't discuss the fact of an adjective.
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by RBBmba@2014 » Thu Aug 06, 2015 8:07 am
GMATGuruNY wrote:
GmatKiss wrote:The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably on a spectrum of genetic relatedness.

A. The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary
considerably
B. That some fraternal twins resemble each other greatly while others look quite dissimilar
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they
vary considerably
C. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it
highlights an interesting and often overlooked feature of fraternal-twin pairs, namely
considerable variation
D. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is
a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a
considerable variation
E. Because some fraternal twins resemble each other greatly and others look quite dissimilar, this
fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they
vary considerably
In A, the fact OF some fraternal twins makes no sense. Eliminate A.

In C and D, it lacks a clear antecedent. Eliminate C and D.

The causal relationship implied by E makes no sense: this fact highlights an interesting feature BECAUSE some fraternal twins resemble each other. The second action is not CAUSING the first. Eliminate E.

The correct answer is B.
Mitch - couple of quick questions on A and the OA.

A: I think, the Singular verb highlights is an ERROR to PLURAL subject The fact of some fraternal...and others looking quite dissimilar ? Isn't it ?

OA: Could you please shed some light that WHAT sort of construction is this (I mean, how we can define it) ? And how often we can expect this sort of construction on GMAT ?

Any other OFFICIAL instances in which such a construction (re starting with THAT) is used in OA ?
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by GMATGuruNY » Fri Aug 07, 2015 6:05 am
RBBmba@2014 wrote: I think, the Singular verb highlights is an ERROR to PLURAL subject The fact of some fraternal...and others looking quite dissimilar ? Isn't it ?
A: THE FACT of some fraternal twins resembling each other greatly and others looking quite dissimilar HIGHLIGHTS an interesting feature.
Here, the portion in red is an adjective serving to modify the fact (singular).
The parallel phrases some fraternal twins resembling each other and others looking quite dissimilar are both intended to serve as objects of the preposition of:
OF some fraternal twins resembling each other
OF others looking quite dissimilar.
While the sentence makes no sense, there is no subject-verb agreement error: highlights (singular) agrees with the fact (also singular).
OA: Could you please shed some light that WHAT sort of construction is this (I mean, how we can define it) ? And how often we can expect this sort of construction on GMAT ?

Any other OFFICIAL instances in which such a construction (re starting with THAT) is used in OA ?
It is VERY COMMON for a that-clause to serve as a NOUN.
In most cases, a that-clause serving as a noun will be the DIRECT OBJECT of a verb.
SC8 in the OG12:
The widely accepted big bang theory holds that the universe began in an explosive instant.
Here, the that-clause in red is a NOUN serving as the direct object of holds.
WHAT does the big bang theory hold?
It holds THAT THE UNIVERSE BEGAN IN AN EXPLOSIVE INSTANT.

OA above:
That some fraternal twins resemble each other greatly while others look quite dissimilar highlights an interesting and often overlooked feature.
Here, the that-clause in red is a noun serving as the SUBJECT of highlights:
WHAT highlights an interesting and often overlooked feature?
That some fraternal twins resemble each other greatly while others look quite dissimilar.

It is far more common for a that-clause to serve as a direct object than as a subject.
Offhand, I cannot cite another OA that begins with a that-clause.
Last edited by GMATGuruNY on Tue Aug 11, 2015 5:44 am, edited 1 time in total.
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by RBBmba@2014 » Mon Aug 10, 2015 6:35 am
@ GMATGuruNY -

(1) Isn't this CONSTRUCTION awkward - THE FACT of some fraternal... ? And is this CONSTRUCTION considered idiomatic in GMAT ?

I guess, CORRECT IDIOM is THE FACT that. Right ?

(2) And what NAMELY THAT relates to ? I think, the portion after NAMELY THAT serves to explain the interesting and often overlooked feature of fraternal-twins . Right ?
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by GMATGuruNY » Tue Aug 11, 2015 5:42 am
RBBmba@2014 wrote:@ GMATGuruNY -

(1) Isn't this CONSTRUCTION awkward - THE FACT of some fraternal... ? And is this CONSTRUCTION considered idiomatic in GMAT ?

I guess, CORRECT IDIOM is THE FACT that. Right ?
Correct.
the fact + of + NOUN is unidiomatic.
The correct idiom is the fact + that-clause.
(2) And what NAMELY THAT relates to ? I think, the portion after NAMELY THAT serves to explain the interesting and often overlooked feature of fraternal-twins . Right ?
Correct.
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