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The wild mouflon sheep of the island of Corsica are direct [#permalink]
 29 Sep 2010, 14:44
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The wild mouflon sheep of the island of Corsica
are direct descendants of sheep that escaped from
domestication on the island 8,000 years ago. They
therefore provide archaeologists with a picture of
what some early domesticated sheep looked like,
before the deliberate selective breeding that
produced modern domesticated sheep began.
The argument above makes which of the following
assumptions?
(A) The domesticated sheep of 8,000 years ago were
quite dissimilar from the wild sheep of the
time.
(B) There are no other existing breeds of sheep that
escaped from domestication at about the
same time as the forebears of the mouflon.
(C) Modern domesticated sheep are direct descen-
dants of sheep that were wild 8,000 years ago.
(D) Mouflon sheep are more similar to their fore-
bears of 8,000 years ago than modern domes-
ticated sheep are to theirs.
(E) The climate of Corsica has not changed at all in
the last 8,000 years.
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D seems correct
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(A) The domesticated sheep of 8,000 years ago were quite dissimilar from the wild sheep of the time. >> Weakens the conclusion. So not an assumption. (B) There are no other existing breeds of sheep that escaped from domestication at about the same time as the forebears of the mouflon. >> Not related to the passage. Passage talks only about Mouflon sheep. (C) Modern domesticated sheep are direct descen- dants of sheep that were wild 8,000 years ago. >> This statement is incorrect as the passage indicates modern domesticated sheep are produced after deliberate selective breeding. (D) Mouflon sheep are more similar to their fore- bears of 8,000 years ago than modern domes- ticated sheep are to theirs. >> This is the assumption that conclusion depends on. This assumption binds the following together
1. Wild Mouflon sheep --direct descendants AND 2. so mouflon sheep can provide picture of what their forebears look like.(E) The climate of Corsica has not changed at all in the last 8,000 years. >> Passage does not talk about climate and this is not relevant for conclusion.
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I go with D.
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yep Clear D.
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Can someone profoundly explain why it is not B?
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D
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IMO D, Code: (B) There are no other existing breeds of sheep that
escaped from domestication at about the
same time as the forebears of the mouflon. It is not B because B is A ) Strong usage B)Doesn't help us with the conclusion (Mouflon sheeps provide archaeologists with a picture of what some early domesticated sheep looked like,before the deliberate selective breeding that produced modern domesticated sheep began)
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Re: The wild mouflon sheep of the island of Corsica are direct [#permalink]
06 May 2012, 20:18
IMO, E If the climate has changed, probably the sheeps have evoluted, or at least adapted, during those 8,000 years. So, probably their current look is not similar to the look of the original sheeps.
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Re: The wild mouflon sheep of the island of Corsica are direct [#permalink]
07 May 2012, 13:42
My pick is D through POe.
What is the OA?
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Re: The wild mouflon sheep of the island of Corsica are direct [#permalink]
07 May 2012, 16:11
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The argument concludes the following: wild M. sheep provide a glimpse of what domesticated sheep 8,000 years ago looked like because these sheep have not been subjected to selective breeding. The assumption is that selective breeding changes the sheep and living out in the wild, as the M. sheep have done, does not make them different from the M. sheep of 8,000 years ago. Only (D) THE ANSWER addresses this assumption. The argument above makes which of the following assumptions? (A) The domesticated sheep of 8,000 years ago were quite dissimilar from the wild sheep of the time. We only care about the wild M. sheep from today, not
what the wild sheep were like 8,000 years ago.(B) There are no other existing breeds of sheep that escaped from domestication at about the same time as the forebears of the mouflon. Let's negate the assumption by omitting 'no' and
see what happens. If there were other breeds of
sheep that had escaped, then is the conclusion still
valid? Notice the argument says 'some domestic sheep',
meaning that the mouflon will give us an idea of how
some of the old domesticated sheep looked, but not
all of them. So even if a few other breeds escaped that
wouldn't weaken this conclusion.
(C) Modern domesticated sheep are direct descen- dants of sheep that were wild 8,000 years ago. The argument doesn't disagree with (C). It states
that the sheep have changed over the years because
of selective breeding.
(D) Mouflon sheep are more similar to their fore- bears of 8,000 years ago than modern domes- ticated sheep are to theirs. ANSWER This is the assumption that ties the argument together.
If M. sheep today are similar to the forebears from 8,000
years ago, then the conclusion is valid, i.e., we can gather
what 8,000-year old sheep looked like. (E) The climate of Corsica has not changed at all in the last 8,000 years. The climate does not relate to this prompt. Do not bring
in outside knowledge based on evolution: changes in climate
and environemt leading to a change in the selective pressures
in an organism.Hope that helps  .
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Magoosh Test Prep
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Re: The wild mouflon sheep of the island of Corsica are direct [#permalink]
07 May 2012, 19:07
+1 for D. Initially i fell for option B. But i could nt eliminate D. B and D are contenders and between them D is the correct. Nice explanation by Chris
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Re: The wild mouflon sheep of the island of Corsica are direct
[#permalink]
07 May 2012, 19:07
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