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According to scientists at the University of California, the

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According to scientists at the University of California, the [#permalink] New post 22 Aug 2012, 07:12
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57% (02:04) correct 43% (00:59) wrong based on 145 sessions
According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millennia indicate the possibility that everyone alive today might be descended from a single female ancestor who lived in Africa sometime between 140,000 and 280,000 years ago.

(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who
(B) indicate that everyone alive today might possibly be a descendant of a single female ancestor who had
(C) may indicate that everyone alive today has descended from a single female ancestor who had
(D) indicates that everyone alive today may be a descendant of a single female ancestor who
(E) indicates that everyone alive today might be a descendant from a single female ancestor who
[Reveal] Spoiler: OA
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 07:13
descendant of
descendant from
which to use and why?
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 07:32
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ananthpatri wrote:
descendant of
descendant from
which to use and why?


Hi there,

When we use the noun "descendant", we use preposition "of" after it. So, it's "descendant of".
When we use the verb "descended", then we use preposition "from" after it. So, we say "descended from".

Let us know if you have any other quesry regarding this problem. :)

Thanks.
Shraddha
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 07:47
egmat wrote:
ananthpatri wrote:
descendant of
descendant from
which to use and why?


Hi there,

When we use the noun "descendant", we use preposition "of" after it. So, it's "descendant of".
When we use the verb "descended", then we use preposition "from" after it. So, we say "descended from".

Let us know if you have any other quesry regarding this problem. :)

Thanks.
Shraddha


Thanks for good explanation. Whether C is wrong because the use of "had" or there is another reason.

Please explain.
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 07:50
egmat wrote:
ananthpatri wrote:
descendant of
descendant from
which to use and why?


Hi there,

When we use the noun "descendant", we use preposition "of" after it. So, it's "descendant of".
When we use the verb "descended", then we use preposition "from" after it. So, we say "descended from".

Let us know if you have any other quesry regarding this problem. :)

Thanks.
Shraddha



Hi Shradha,

Can we use the word possibility and may in a single sentence. Any specific reason for dropping possibility from option D.

Regards,
Vivek Dixit
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 08:10
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Hi there,

According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millennia indicate the possibility that everyone alive today might be descended from a single female ancestor who lived in Africa sometime between 140,000 and 280,000 years ago.

Error Analysis:
1. The subject for the plural verb “indicate” is singular “the pattern”. So, we have SV number agreement here.
2. The underlined portion contains “possibility” as well as “might”. Both the words indicate possibility. Hence, we cannot use both the words in same construction. Presence of both renders one of them redundant.
3. Use of “might be descended”. The correct verb here should be “might have descended” because all the alive people today have already taken birth and thus have descended. Verb “might be descended” seems to suggest that this action could have some possibility in the future.

POE:

(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who: Incorrect for the reason stated above.

(B) indicate that everyone alive today might possibly be a descendant of a single female ancestor who had: Incorrect.
1. Same SV agreement number error as in choice A.
2. Same redundancy error as in choice A.
3. Use of past perfect tense “had lived” is incorrect here. There are no two past events that we need to use past perfect tense to establish sequence. The sentence is presenting general information about this woman ancestor and hence, nust be written in simple past tense.

(C) may indicate that everyone alive today has descended from a single female ancestor who had: Incorrect.
1. Placement of “may” is incorrect. Per the original sentence, there is a possibility that all of us have descended from a single woman ancestor. Per this choice the possibility is that the pattern of changes may indicate something. This is certainly not the intended meaning.
2. Same past perfect tense error as in choice B.

(D) indicates that everyone alive today may be a descendant of a single female ancestor who: Correct.

(E) indicates that everyone alive today might be a descendant from a single female ancestor who: Incorrect. “descendent from” is an incorrect expression.

Hope this helps.
Thanks.
Shraddha
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 10:44
Remove A,B, and C because "The pattern" indicates, not indicate. E incorrectly uses "descendant from". You are a descendant of, you descend from.
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Re: According to scientists at the University of California, [#permalink] New post 22 Aug 2012, 19:04
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Injuin wrote:
Remove A,B, and C because "The pattern" indicates, not indicate. E incorrectly uses "descendant from". You are a descendant of, you descend from.


I don't think you can eliminate C based on that reasoning because verb coming after "may" should be in its root form. i.e. "indicate"
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Re: According to scientists at the University of California, [#permalink] New post 23 Aug 2012, 07:02
plui31 wrote:
Injuin wrote:
Remove A,B, and C because "The pattern" indicates, not indicate. E incorrectly uses "descendant from". You are a descendant of, you descend from.


I don't think you can eliminate C based on that reasoning because verb coming after "may" should be in its root form. i.e. "indicate"


That's a good point. I don't know what the rule is called, but what you said is valid. Therefore I will have to say you have to eliminate C due to descendant from instead of the use of "indicate".
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Re: According to scientists at the University of California, the [#permalink] New post 16 May 2015, 05:52
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Re: According to scientists at the University of California, the [#permalink] New post 16 Jul 2015, 12:24
(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who
possibility.. might - REDUNDANCY
(B) indicate that everyone alive today might possibly be a descendant of a single female ancestor who had
same as option A
(C) may indicate that everyone alive today has descended from a single female ancestor who had
'may' - misplaced
(D) indicates that everyone alive today may be a descendant of a single female ancestor who
correct
(E) indicates that everyone alive today might be a descendant from a single female ancestor who
'descendant from' - Unidiomatic. 'descendant of' is the right idiom.
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Re: According to scientists at the University of California, the   [#permalink] 16 Jul 2015, 12:24
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