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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 24 Aug 2005, 19:39
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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
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 [#permalink] New post 24 Aug 2005, 19:45
D for me -> 2 reasons :

1) subject/verbs : the pattern of changes...indicateS

2) idioms : X is called a descendant of an element Y, not from.
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Re: SC: According to scientists at the University of Califor [#permalink] New post 25 Aug 2005, 02:18
pjreddy_rec wrote:
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



My choice C.

"indicates" should not be correct as "the pattern of changes that have ".
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 [#permalink] New post 25 Aug 2005, 05:30
(C) but for another reason

We have a strict time frame "between 140,000 and 280,000" so the use of past perfect is more relevant

IMHO
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Re: SC: According to scientists at the University of Califor [#permalink] New post 25 Aug 2005, 08:43
One more vote for D
1- No need to use the past perfect tense here, so we can eliminate Band C
2-indicate the possibility is redundant, so A is out
3- to be descendant of --> idiom

Comments and advice are welcomed



pjreddy_rec wrote:
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
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 [#permalink] New post 28 Aug 2005, 05:01
'pattern' is singular and so need singular 'indicates'. A B and C are out.

Between D and E, E is out as 'descendant from' is not idiomatic.

D is the best choice.
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 [#permalink] New post 28 Aug 2005, 05:41
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

There're only two possibilties here, either c or d.
the singular Pattern needs indicateS
Then the idiom descendent of is correct and also may is preferable in
research and formal language.
  [#permalink] 28 Aug 2005, 05:41
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