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# Plant geneticists continue to modify and refine the DNA of

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Plant geneticists continue to modify and refine the DNA of [#permalink]

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12 Aug 2010, 10:18
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Plant geneticists continue to modify and refine the DNA of agricultural products, altering genes that affect the abundance and taste of the crop. Eventually, the entire genome of every major food crop will be subject to such manipulation. Once these scientists have mastered the DNA of all major food crops, no obstacles to abundant, delicious vegetables and grains will remain.
The argument to the left is based on which of the following assumptions?
Choices
A All obstacles to agricultural production are susceptible to genetic remedies.
B Obstacles to the agricultural production are susceptible only to genetic remedies.
C There is already a visible change in produce size at supermarkets, attributable to genetic manipulation of crops.
D Produce taste tests should be conducted to compare genetically modified produce and natural produce.
E Consumers have grown increasingly skeptical of the merits of genetically modified produce.
[Reveal] Spoiler: OA

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Re: Plant geneticists continue to modify and refine the DNA of [#permalink]

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14 Dec 2012, 00:36
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Archit143 wrote:
Plant geneticists continue to modify and refine the DNA of agricultural products, altering genes that affect the abundance and taste of the crop. Eventually, the entire genome of every major food crop will be subject to such manipulation. Once these scientists have mastered the DNA of all major food crops, no obstacles to abundant, delicious vegetables and grains will remain.

The argument to the left is based on which of the following assumptions?

A
All obstacles to agricultural production are susceptible to genetic remedies.
B
Obstacles to the agricultural production are susceptible only to genetic remedies.
C
There is already a visible change in produce size at supermarkets, attributable to genetic manipulation of crops.
D
Produce taste tests should be conducted to compare genetically modified produce and natural produce.
E
Consumers have grown increasingly skeptical of the merits of genetically modified produce.

Source Grockit

I don't think taht we should even discuss about CDE.
A and B are contender.
Lets try B first.
B says-Obstacles to the agricultural production are susceptible only to genetic remedies. On negating, we come up with "Obstacles to the agricultural production are susceptible NOT only to genetic remedies". It implies that that there are other remedies also; consider that the other remedy be X.
Now if I say that obstacles to the agricultural production are susceptible to genetic remedies and X then how can we conclude that once these scientists have mastered the DNA, there would be no obstacles. May be that some obstacles are susceptible to only X.

Now try A-All obstacles to agricultural production are susceptible to genetic remedies.
The argument says that "once these scientists have mastered the DNA, there would be NO obstacles". So it is clear that A is the assumption here.
+1A
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12 Aug 2010, 12:31
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...no obstacles to abundant, delicious vegetables and grains will remain....

A. All obstacles to agricultural production are susceptible to genetic remedies.

For no obstacles to remain, then the genetic remedies must be able to eliminate all possible ones.

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12 Aug 2010, 15:27
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A. it is.

Let's neglect the assumption that all agricultural production issues can be solved genetically.

What if some problems with major ag crops cannot be solved genetically.
What if manipulation of abundance and taste are among those genetically unsolvable problems.
Then we cannot be so sure that no obstacle to abundance and taste of all major crops will remain.
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12 Aug 2010, 17:42
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A and B are contenders and all others are completely place for fun.

Between A and B, pick A as we want all obstacles to be susceptible to genetic modification.

@magnetictempest,

Very well pointed out.

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12 Aug 2010, 10:24
The argument is talking about 2 obstacles: abundance and taste. How can 2 obstacles constitute as all obstacles susceptible to genetic remedies. I think thats a big leap in assumption.

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12 Aug 2010, 10:29
So what is the answer ?

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12 Aug 2010, 10:54
The problem is all other options except A and B are plain wrong. Now B is extreme and hence only A remains (which I dont like either for the reason mentioned above).

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12 Aug 2010, 11:55
why not C?

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12 Aug 2010, 12:50
ramana

Because C doesn't have anything to do with conclusion

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14 Aug 2010, 09:51
+1 for A The conclusion says "no obstacles to abundant, delicious vegetables and grains will remain." which implies all obstacles are susceptible to genetic remedies as given in A

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14 Aug 2010, 22:15
A

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15 Aug 2010, 15:38
c-e totally out of scope - I was deciding between A and B but connection "no-all" speaks clearly for A
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15 Aug 2010, 19:15
A

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16 Aug 2010, 07:50
B is clearly wrong. Coz it says ....only remedy is genetics. Not true. May have other remedies.

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16 Aug 2010, 08:34
+1 for A.

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18 Aug 2010, 00:53
MARKED A COZ NOTHING ELSE WAS MORE ACCEPETABLE

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07 Sep 2010, 04:37
Easy...A at first glance don't need to read the rest
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07 Sep 2010, 08:44
A. It gives a clear example of what the passage is dependent upon. 54 seconds.

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07 Sep 2010, 10:31
A

After browsing through all the choices, almost everyone narrows down to A & B. Read these two carefully, and you will realize that they have different meanings. Some ppl pointed out that "Taste" and "Abundance" can't be pointed out as ALL the obstacles. Well, taste and abundance is basically everything you need from the crops.

Assumption is not that "only" genetic remedies can solve all problems ..... nothing in there says that only genetics can solve all the problems....... however, assumption is that once we have figured out the complete genetic makeup of the crops, we will be able to solve taste and abundance issues. A is right on target. Whether taste and abundance are all the issues or there are more is a mere distraction.
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Re: DIFFICULT CR QUESTION   [#permalink] 07 Sep 2010, 10:31

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