While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
A. a new class of mutant genes was discovered by Barbara McClintock, a discovery which led
B. a new class of mutant genes in corn were discovered by Barbara McClintock, leading
C. Barbara McClintock discovered a new class of mutant genes, and it led
D. Barbara McClintock discovered a new class of mutant genes, a discovery that led
E. Barbara McClintock, who discovered a new class of mutant genes, leading
Elite Official SC 31 While studying the genetic makeup of co
This topic has expert replies
- richachampion
- Legendary Member
- Posts: 698
- Joined: Tue Jul 21, 2015 12:12 am
- Location: Noida, India
- Thanked: 32 times
- Followed by:26 members
- GMAT Score:740
R I C H A,
My GMAT Journey: 470 → 720 → 740
Target Score: 760+
[email protected]
1. Press thanks if you like my solution.
2. Contact me if you are not improving. (No Free Lunch!)
My GMAT Journey: 470 → 720 → 740
Target Score: 760+
[email protected]
1. Press thanks if you like my solution.
2. Contact me if you are not improving. (No Free Lunch!)
- richachampion
- Legendary Member
- Posts: 698
- Joined: Tue Jul 21, 2015 12:12 am
- Location: Noida, India
- Thanked: 32 times
- Followed by:26 members
- GMAT Score:740
OA : D
I am interested in discussing Option C and Option D.
, a discovery that: what kind of modifier is this?
I am interested in discussing Option C and Option D.
, a discovery that: what kind of modifier is this?
R I C H A,
My GMAT Journey: 470 → 720 → 740
Target Score: 760+
[email protected]
1. Press thanks if you like my solution.
2. Contact me if you are not improving. (No Free Lunch!)
My GMAT Journey: 470 → 720 → 740
Target Score: 760+
[email protected]
1. Press thanks if you like my solution.
2. Contact me if you are not improving. (No Free Lunch!)
-
- Junior | Next Rank: 30 Posts
- Posts: 13
- Joined: Wed Aug 30, 2017 11:34 am
in C- ,"and it led to to greater understanding of cell differentiation" has pronoun, which creates a reference error with corn
in D:- No such ambiguity .(participial modifier)
in D:- No such ambiguity .(participial modifier)
- DavidG@VeritasPrep
- Legendary Member
- Posts: 2663
- Joined: Wed Jan 14, 2015 8:25 am
- Location: Boston, MA
- Thanked: 1153 times
- Followed by:128 members
- GMAT Score:770
In D "a discovery" functions as a summative modifier - a noun phrase that summarizes the idea of a preceding clause. (The clause in this case is "Barbara McClintock discovered a new class of mutant genes.")richachampion wrote:OA : D
I am interested in discussing Option C and Option D.
, a discovery that: what kind of modifier is this?
Another example, "Dave tore his meniscus, an injury that will keep him off the basketball court for several months." Here, "an injury" is a summative modifier, a noun phrase summarizing the previous clause "Dave tore his meniscus."
In C, "it" has no logical antecedent. Does "it" refer to "class?" Well, that wouldn't make any sense. It was the discovery that led to greater understanding, not the class of mutant genes itself.
- GMATGuruNY
- GMAT Instructor
- Posts: 15539
- Joined: Tue May 25, 2010 12:04 pm
- Location: New York, NY
- Thanked: 13060 times
- Followed by:1906 members
- GMAT Score:790
I received a PM requesting that I comment.richachampion wrote:While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
A. a new class of mutant genes was discovered by Barbara McClintock, a discovery which led
B. a new class of mutant genes in corn were discovered by Barbara McClintock, leading
C. Barbara McClintock discovered a new class of mutant genes, and it led
D. Barbara McClintock discovered a new class of mutant genes, a discovery that led
E. Barbara McClintock, who discovered a new class of mutant genes, leading
In A and B, the agent of studying seems to be a new class -- the following subject -- implying that A NEW CLASS was STUDYING.
This meaning is nonsensical.
Eliminate A and B.
In C, it seems to refer to a new class -- the only singular non-person noun in the preceding clause -- implying that A NEW CLASS led to greater understanding of cell differentiation.
This meaning is nonsensical:
The intended meaning is that the DISCOVERY of this gene class led to greater understanding.
Eliminate C.
In E, Barbara McClintock (subject) lacks a verb.
The result is an incomplete sentence.
Eliminate E.
The correct answer is D.
OA: While studying the genetic makeup of corn, Barbara McClintock discovered a new class of mutant genes, a discovery that led to greater understanding of cell differentiation.
As David mentions above, the portion in blue is a SUMMATIVE MODIFIER.
The purpose of a summative modifier is to SUM UP the preceding clause.
Conveyed meaning:
The preceding clause in red -- Barbara McClintock discovered a new class -- constitutes a DISCOVERY THAT LED TO GREATER UNDERSTANDING OF CELL DIFFERENTIATION
For another example of a summative modifier, check here:
https://www.beatthegmat.com/abstract-nou ... 74454.html
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3