Twins - SC

[karthikpandian19]

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 sonic 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

[gunjan1208]

IMO C

[sam2304]

IMO D.

[hoji]

IMO B
A) "the fact of" is not idiomatic, "the fact that" is idiomatic.
C) "it" has no clear antecedent and "namely" should always precede "that";
D) has some problems with preciseness: "it is a fact that", and "namely";
E) "namely that" is the right usage.

[sam2304]

IMO B
A) "the fact of" is not idiomatic, "the fact that" is idiomatic.
C) "it" has no clear antecedent and "namely" should always precede "that";
D) has some problems with preciseness: "it is a fact that", and "namely";
E) "namely that" is the right usage.

Agree with the namely part its usage is similar to colon should be followed by nouns or a phrase. Can you be more elaborate on D ? I was skeptical about 'D', but none seems better . Does option B have proper structure ? Can a sentence start with 'that' ?

[hoji]

IMO B
A) "the fact of" is not idiomatic, "the fact that" is idiomatic.
C) "it" has no clear antecedent and "namely" should always precede "that";
D) has some problems with preciseness: "it is a fact that", and "namely";
E) "namely that" is the right usage.

Agree with the namely part its usage is similar to colon should be followed by nouns or a phrase. Can you be more elaborate on D ? I was skeptical about 'D', but none seems better . Does option B have proper structure ? Can a sentence start with 'that' ?

Sure, a sentence can begin with "that", refer to OG12, SC57.
About D, I think that if "it" refers to "With some fraternal twins resembling each other greatly and others looking quite dissimilar", it is like saying: "having bought ten flowers, it is Ben who made his girlfriend happy". this is not right, because "Ben" should immediately follow "having bought ten flowers", "it" cannot follow describing clauses like above unless "it" is the thing which is described and if "it" is "expletive it", then sentence fragment problem occurs.

[GmatKiss]

Yes, a sentence can start with that, but bit skeptical with the structure used in B,

That sonic 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

Is the highlighted part correct? Am not getting this. Please help!

[hoji]

Yes, a sentence can start with that, but bit skeptical with the structure used in B,

That sonic 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

Is the highlighted part correct? Am not getting this. Please help!

excerpt right from Papgust's GMAT Sentence Correction Flash Cards