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According to scientists at the University of California, the pattern

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Re: According to scientists at the University of California, the pattern  [#permalink]

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New post 18 Jan 2017, 11:42
Hi All,

I have read all the answers and I still do not understand a few things about answer choice C :

Since the subject is "pattern" (singular) why do we have to discard "may" ?
Don't we say : "He may come later" or "He may visit us next week" ?(same orthography as answer choice C)

Also, some argue that "may indicate" change the meaning, but since may indicate the possibility of something

Why do we consider "may indicate that" to have a different meaning from "indicate the possibility that" ?

As I am not native speaker, my question could seem irrelevant and I apologie for that,
Meanwhile, I thank you in advance for your kind help,
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Re: According to scientists at the University of California, the pattern  [#permalink]

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New post 18 Jan 2017, 18:55
nickimonckom wrote:
Hi All,

I have read all the answers and I still do not understand a few things about answer choice C :

Since the subject is "pattern" (singular) why do we have to discard "may" ?
Don't we say : "He may come later" or "He may visit us next week" ?(same orthography as answer choice C)

Also, some argue that "may indicate" change the meaning, but since may indicate the possibility of something

Why do we consider "may indicate that" to have a different meaning from "indicate the possibility that" ?

As I am not native speaker, my question could seem irrelevant and I apologie for that,
Meanwhile, I thank you in advance for your kind help,


C is incorrect not because of wrong S-V agreement ("may indicate" is alright), but because of unnecessary use of past perfect ("HAD lived" is not required).

Your reasoning is valid - "may indicate" and " indicate the possibility" both convey the same meaning.

The problem in A is the redundancy due to simultaneous use of "possibility" and "might".

...the possibility that everyone alive today might be descended... correct
...the possibility that everyone alive today might be descended... redundant

The same problem is there in B as well:"might possibly"
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Re: According to scientists at the University of California, the pattern  [#permalink]

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New post 09 Mar 2017, 06:26
Why is not there "had" at the end of the phrase in D? That bothered me to such an extent I chose B.

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Re: According to scientists at the University of California, the pattern  [#permalink]

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New post 11 Mar 2017, 12:26
dina98 wrote:
Why is not there "had" at the end of the phrase in D? That bothered me to such an extent I chose B.

Posted from my mobile device


Past perfect is to be used only when it is required to highlight the sequence of events. If the sequence is clear, then simple past is preferred. Following is an excerpt from Manhattan SC guide:

Do not use the perfect tenses when the simple tenses will do. The GMAT prefers simplicity.
Wrong: Joe LEARNED about an epoch in which dinosaurs HAD WALKED the earth.
Right: Joe LEARNED about an epoch in which dinosaurs WALKED the earth.
In the first example, the Past Perfect had walked is unnecessary. Although the action had walked does take place earlier than the action learned, the earlier action does not have a direct bearing on the context of the later action. The sequence of time does not need to be clarified or emphasized. Thus, the Past Perfect is considered wrong in this context.
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Re: According to scientists at the University of California, the pattern  [#permalink]

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New post 24 Sep 2017, 11:31
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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Re: According to scientists at the University of California, the pattern  [#permalink]

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New post 20 Dec 2018, 04:36
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Re: According to scientists at the University of California, the pattern &nbs [#permalink] 20 Dec 2018, 04:36

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