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# While studying the genetic makeup of corn, a new class

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While studying the genetic makeup of corn, a new class [#permalink]

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14 Oct 2005, 13:30
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Q30:
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
[Reveal] Spoiler: OA

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Director
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14 Oct 2005, 18:20
A. misplaced modifier
B. misplaced modifier
C. 'it' doesn't have a clear noun that it can refer to.
D. Best choice. Clear and concise.
E. awkward

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Re: SC # Barbara McClintock [#permalink]

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14 Oct 2005, 19:14
D is best. needs noun to modify the phrase "While studying the genetic makeup of corn".

nakib77 wrote:
Q30: 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.
D. Barbara McClintock discovered a new class of mutant genes, a discovery that led

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Re: SC # Barbara McClintock [#permalink]

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14 Oct 2005, 20:06
Clear D

A and B use wrong ref.
C has tense error "led"
E wrong construction.

nakib77 wrote:
Q30:
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

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Re: SC # Barbara McClintock [#permalink]

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14 Oct 2005, 21:27
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nakib77 wrote:
Q30:
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

who "studying" here is Barbara, not the " new class of mutant" . Thus, eliminate A and B.
What " leading" here is the discovery , not Barbara. Eliminate E.
"it" in C has no ante-decent, thus C is out.
I'm left with D.

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15 Oct 2005, 07:47
Same analysis an laxieqv.

D is definately the OA.

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Re: Q30: While studying the genetic makeup of corn, a new class [#permalink]

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11 Aug 2013, 12:25
nakib77 wrote:
Q30:
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

I have a small doubt in D . Is the sentence D correct at all . verbs discovered and led , both in the same tense . This sounds awkard to me . I guess it should be had discovered and led to emphasize that discovery happened first . Is my logic correct ??

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Re: While studying the genetic makeup of corn, a new class [#permalink]

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01 Nov 2014, 10:23
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This is a simple question and you can answer it correctly by just figuring out the correct structure you can get among the answer choices.
First, analyze its building blocks in clauses and then know what each element is.

Correct answer choice D looks like this:

Subordinate Clause + Main Clause + Subordinate Clause

Opening Modifier + Subject, Verb, Object + Noun+Noun Modifier (modifying preceding clause)

Hope it helps
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Re: While studying the genetic makeup of corn, a new class [#permalink]

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14 Nov 2016, 09:45
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Re: While studying the genetic makeup of corn, a new class   [#permalink] 14 Nov 2016, 09:45
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