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Male BowerBirds OG 10

Expert replies
by lokesh r » Tue Nov 16, 2010 9:27 am
Male bowerbirds construct elaborately decorated nests, or bowers. Basing their judgment on the fact that
different local populations of bowerbirds of the same species build bowers that exhibit different building and
decorative styles, researchers have concluded that the bowerbirds' building styles are a culturally acquired,
rather than a genetically transmitted, trait.
Which of the following, if true, would most strengthen the conclusion drawn by the researchers?
(A) There are more common characteristics than there are differences among the bower-building styles of
the local bowerbird population that has been studied most extensively
(B) Young male bowerbirds are inept at bower-building and apparently spend years watching their elders
before becoming accomplished in the local bower style.
(C) The bowers of one species of bowerbird lack the towers and ornamentation characteristic of the bowers
of most other species of bowerbird.
(D) Bowerbirds are found only in New Guinea and Australia, where local populations of the birds apparently
seldom have contact with one another.
(E) It is well known that the song dialects of some songbirds are learned rather than transmitted genetically.

Ans option says B, which i could understand. but i am not convinced with explanation provided why option C is wrong. Can anyone explain comprehensively why option C is wrong ?
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Source: — Critical Reasoning |

by rkanthilal » Tue Nov 16, 2010 9:54 am
lokesh r wrote: Ans option says B, which i could understand. but i am not convinced with explanation provided why option C is wrong. Can anyone explain comprehensively why option C is wrong ?
P1: Male bowerbirds construct elaborately decorated nests, or bowers.
P2: Different local populations of bowerbirds of the same species build bowers that exhibit different building and
decorative styles
C1: Bowerbirds' building styles are a culturally acquired, rather than a genetically transmitted, trait.

(C) "The bowers of one species of bowerbird lack the towers and ornamentation characteristic of the bowers of most other species of bowerbird." Look at the above premise P2. It says that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles. This premise leads the researchers to conclude that building styles are culturally acquired and not genetic.

Answer (C) refers to bowerbirds of different species. If the birds are from different species then the differences in building styles may be genetic. This answer does not support the conclusion that the differences are cultural.

Hope this helps...
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by lokesh r » Tue Nov 16, 2010 2:10 pm
rkanthilal wrote:
lokesh r wrote: Ans option says B, which i could understand. but i am not convinced with explanation provided why option C is wrong. Can anyone explain comprehensively why option C is wrong ?
P1: Male bowerbirds construct elaborately decorated nests, or bowers.
P2: Different local populations of bowerbirds of the same species build bowers that exhibit different building and
decorative styles
C1: Bowerbirds' building styles are a culturally acquired, rather than a genetically transmitted, trait.

(C) "The bowers of one species of bowerbird lack the towers and ornamentation characteristic of the bowers of most other species of bowerbird." Look at the above premise P2. It says that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles. This premise leads the researchers to conclude that building styles are culturally acquired and not genetic.

Answer (C) refers to bowerbirds of different species. If the birds are from different species then the differences in building styles may be genetic. This answer does not support the conclusion that the differences are cultural.

Hope this helps...
Thanks a lot..
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by Jon@Knewton » Fri Nov 19, 2010 3:02 pm
rkanthilal covered the main point, but there is another issue with answer choice C: It has nothing to do with the researchers' conclusion.

Even if choice C referred to different local populations and not different species, it would still be wrong because it is essentially restating the evidence submitted in the stimulus. The paragraph states that different populations of bowerbirds build bowers that "exhibit different building and decorative styles." Answer choice C merely restates this using irrelevant details about towers and ornamentation. This evidences the fact that different populations build different types of bowers, but it does not strengthen the researchers' conclusion, which was meant to answer why the birds build differently in the first place.
Jonathan Bethune
Content Developer
Knewton
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by nafiul9090 » Mon Aug 20, 2012 8:58 pm
i know option B strengthens the conclusion. however, OG says Option E also supports the conclusion a bit not as much as does B. But as far i know only one option strengthens or weakens the argument, it does not matter to what extent.

please help.
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by hjafferi » Tue Aug 21, 2012 7:37 am
IMO B

A) talks about bowers studied only whereas the argument is for all bowers
B) correct answer. Suggests that shapes are not dictated by genetics
C) Weakens the argument rather than strengthen it
D) no connection
E) no conection
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by mohan514 » Fri Aug 24, 2012 10:01 pm
can i put it this way??

as option C is rearrangment of words giving the same meaning of one of the premises.
i eliminate it..


please let me know if my reasoning is wrong
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by tanviet » Wed Dec 05, 2012 5:34 am
normaly, we prethink an assumption then go to the answer choice to took for some thing which is along the line with the prethought assumption. This process is for strengthen/weaken.

in this question, pls, show an assumption and how to find the correct choices.
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by gmattesttaker2 » Sun Jun 16, 2013 10:54 pm
Hello,

Can someone please explain why D is wrong? I was thinking that since this choice says that the local populations of the birds seldom have contact with each other their bower building style has to be culturally acquired.

Thanks,
Sri
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