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Loggerhead turtles live and breed in distinct groups, of

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Affiliations: SAE
Joined: 11 Jul 2012
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Location: India
Concentration: Strategy, Social Entrepreneurship
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Loggerhead turtles live and breed in distinct groups, of [#permalink] New post 20 Sep 2012, 22:16
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

61% (02:48) correct 38% (02:18) wrong based on 68 sessions
Loggerhead turtles live and breed in distinct groups, of which some are in the Pacific Ocean and some are in the Atlantic. New evidence suggests that juvenile pacific loggerheads that feed near the Baja peninsula hatch in Japanese waters 10,000 kilometers away. Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from turtles at the Japanese nesting sites.
Which one of the following, if true, most seriously weakens the reasoning above?
(A) Nesting sites of loggerhead turtles have been found off the Pacific coast of North America several thousand kilometers north of the Baja peninsula.
(B) The distance between nesting sites and feeding sites of Atlantic loggerhead turtles is less than 5,000 kilometers.
(C) Loggerhead hatchlings in Japanese waters have been declining in number for the last decade while the number of nesting sites near the Baja peninsula had remained constant.
(D) Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from Atlantic loggerhead turtles.
(E) Commercial aquariums have been successfully breeding Atlantic loggerheads with Pacific loggerheads fro the last five years.
[Reveal] Spoiler: OA

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First Attempt 710 - first-attempt-141273.html


Last edited by getgyan on 23 Sep 2012, 19:31, edited 1 time in total.
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Re: Loggerhead turtles live and breed in distinct [#permalink] New post 21 Sep 2012, 13:54
We have to weaken the conclusion "Loggerhead turtles live and breed in distinct groups"
and Choice e does it perfectly.
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Affiliations: SAE
Joined: 11 Jul 2012
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Concentration: Strategy, Social Entrepreneurship
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Re: Loggerhead turtles live and breed in distinct [#permalink] New post 23 Sep 2012, 19:30
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+1D

It is weaken type question

Premise 1 - Loggerhead turtles live and breed in distinct groups, of which some are in the Pacific Ocean and some are in the Atlantic
Premise 2 - Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from turtles at the Japanese nesting sites

Conclusion - New evidence suggests that juvenile pacific loggerheads that feed near the Baja peninsula hatch in Japanese waters 10,000 kilometers away

Any options which weakens the conclusion is our answer

(D) Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from Atlantic loggerhead turtles. (This options weakens the conclusion by suggesting that the turtles which hatch in Japanese water could be Atlantic loggerhead turtles, thus weakening the conclusion that pacific loggerheads feed near Baja and hatch near Japan)

:-D
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Re: Loggerhead turtles live and breed in distinct groups, of [#permalink] New post 28 Nov 2013, 20:38
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Loggerhead turtles live and breed in distinct groups, of [#permalink] New post 29 Nov 2013, 02:56
Can you explain why other choices are eliminated?
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Re: Loggerhead turtles live and breed in distinct groups, of   [#permalink] 29 Nov 2013, 02:56
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