HKD1710 wrote:
leeye84 wrote:
906. Unlike transplants between identical twins, whose genetic endowment is the same, all patients receiving hearts or other organs must take antirejection drugs for the rest of their lives.
(A) Unlike transplants between identical twins, whose genetic endowment is the same
(B) Besides transplants involving identical twins with the same genetic endowment
(C) Unless the transplant involves identical twins who have the same genetic endowment
(D) Aside from a transplant between identical twins with the same genetic endowment
(E) Other than transplants between identical twins, whose genetic endowment is the same
Hi Experts,
egmat,
mikemcgarry,
sayantanc2kI want to thoroughly understand the difference between the usage of with and who here:
(B) Besides transplants involving
identical twins with the same genetic endowment(C) Unless the transplant involves
identical twins who have the same genetic endowmentPlease help
Elaborating on my confusion and some analysis i did:
Here is the official explanation:You answered "Unless the transplant involves identical twins who have the same genetic endowment" and that's correct because:
In A and B, the phrases beginning Unlike… and Besides… modify patients, the subject of the main clause; thus A absurdly states that Unlike transplants…, patients…must take…drugs, and B that all patients except for transplants…must take… drugs.
In B and D the expression identical twins with the same genetic endowment wrongly suggests that only some identical twin pairs are genetically identical. In E, the construction Other than transplants…, all patients… must take… drugs illogically suggests, as in B, that some patients are transplants. Choice C, the best answer, solves these problems by using a clause introduces by Unless to describe the exception to the rule and
a nonrestrictive clause beginning with who to describe the characteristic attributed to all identical twins.Confusion and Analysis:As it looks like both of the following have the same meaning, I got confused by the explanation (
highlighted), especially for choice correct choice C in which who is termed as nonrestrictive).
(B) Besides transplants involving
identical twins with the same genetic endowment(C) Unless the transplant involves
identical twins who have the same genetic endowmentI found one of RON's posts in which he mentions that for "a nonrestrictive clause beginning with who to describe the characteristic attributed to all identical twins." to be true there has to be a comma before "who" in choice . here is the link:
https://www.manhattanprep.com/gmat/forums/restrictive-vs-non-restrictive-t25787.html#p96242Yes that's the concept we have learned about norestrictive or nonessential modifiers.
BUT when i looked up meaning of "who" that says - "used to introduce a clause giving further information about a person or people previously mentioned."
Now this seems to confirm that no comma is required and given official explanation is correct.
I need Experts' opinion on my understanding.
Thanks