Find all School-related info fast with the new School-Specific MBA Forum

It is currently 25 Jul 2014, 23:13

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Researchers studying the spread of the Black Plague in

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Intern
Intern
avatar
Joined: 09 Mar 2010
Posts: 40
Concentration: Technology, General Management
Schools: McCombs '14
Followers: 0

Kudos [?]: 4 [1] , given: 17

GMAT ToolKit User
Researchers studying the spread of the Black Plague in [#permalink] New post 20 Sep 2010, 04:25
1
This post received
KUDOS
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

68% (02:20) correct 32% (01:59) wrong based on 387 sessions
Researchers studying the spread of the Black Plague in sixteenth-century England claim that certain people survived the epidemic because they carried a genetic mutation, known as Delta-32, that is known to prevent the bacteria that causes the Plague from overtaking the immune system. To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.

The researchers' hypothesis is based on which of the following assumptions?
a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.
b) The Plague is not similar to other diseases caused by bacteria.
c)Delta-32 did not exist in its current form until the sixteenth century.
d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.
e)The Plague does not cause genetic mutations such as Delta-32.



Please post the answers with explanations.
[Reveal] Spoiler: OA

Last edited by kalrac on 20 Sep 2010, 05:18, edited 2 times in total.
Manager
Manager
avatar
Joined: 25 Aug 2010
Posts: 99
Followers: 1

Kudos [?]: 4 [0], given: 1

GMAT Tests User
Re: Researchers studying the spread of the Black Plague [#permalink] New post 20 Sep 2010, 04:45
Is it E ???
Retired Moderator
User avatar
Joined: 02 Sep 2010
Posts: 807
Location: London
Followers: 77

Kudos [?]: 446 [0], given: 25

GMAT ToolKit User GMAT Tests User Reviews Badge
Re: Researchers studying the spread of the Black Plague [#permalink] New post 20 Sep 2010, 05:00
kalrac wrote:
Researchers studying the spread of the Black Plague in sixteenth-century England claim that certain people survived the epidemic because they carried a genetic mutation, known as Delta-32, that is known to prevent the bacteria that causes the Plague from overtaking the immune system. To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.

The researchers' hypothesis is based on which of the following assumptions?
a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.There is no mention of other diseases
b) The Plague is not similar to other diseases caused by bacteria.Again no mention of other diseases
c)Delta-32 did not exist in its current form until the sixteenth century.To the contrary if anything the article probably needs the form to stay the same
d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.No mention of any diseases
e)The Plague does not cause genetic mutations such as Delta-32.This is right. It assumes the plague does not cause Delta-32, since it concludes on the reverse causality

OA TBD after discussion.

Please post the answers with explanations.

_________________

Math write-ups
1) Algebra-101 2) Sequences 3) Set combinatorics 4) 3-D geometry

My GMAT story

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Senior Manager
Senior Manager
User avatar
Joined: 25 Feb 2010
Posts: 459
Followers: 3

Kudos [?]: 31 [0], given: 5

GMAT Tests User
Re: Researchers studying the spread of the Black Plague [#permalink] New post 20 Sep 2010, 05:13
This is cause and effect type of question.
E shows that reverse is not possible.
Therefore, E is correct.
_________________

GGG (Gym / GMAT / Girl) -- Be Serious

Its your duty to post OA afterwards; some one must be waiting for that...

Senior Manager
Senior Manager
User avatar
Status: Upset about the verbal score - SC, CR and RC are going to be my friend
Joined: 30 Jun 2010
Posts: 318
Followers: 4

Kudos [?]: 14 [0], given: 6

GMAT Tests User
Re: Researchers studying the spread of the Black Plague [#permalink] New post 20 Sep 2010, 05:34
kalrac wrote:
a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.
our scope is to discuss on Black Plague not any disease
b) The Plague is not similar to other diseases caused by bacteria.
our scope is to discuss on Black Plague not any other disease
c)Delta-32 did not exist in its current form until the sixteenth century.
form is not relevant for this argument
d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.
Too extreme
e)The Plague does not cause genetic mutations such as Delta-32.
should be the answer
Please post the answers with explanations.

_________________

My gmat story
MGMAT1 - 630 Q44V32
MGMAT2 - 650 Q41V38
MGMAT3 - 680 Q44V37
GMATPrep1 - 660 Q49V31
Knewton1 - 550 Q40V27

Senior Manager
Senior Manager
avatar
Joined: 06 Jun 2009
Posts: 333
Location: USA
WE 1: Engineering
Followers: 1

Kudos [?]: 51 [0], given: 0

GMAT Tests User
Re: Researchers studying the spread of the Black Plague [#permalink] New post 21 Sep 2010, 05:47
Irrelevant a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.
Irrelevant b) The Plague is not similar to other diseases caused by bacteria.
Again, irrelevant :roll: c)Delta-32 did not exist in its current form until the sixteenth century.
Again, irrelevant :roll: :roll: d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.
They assumed this to be true, else this would have been a side affect and not the reason to survive the plague. In order for Delta-32 to be the reason of surviving, it had to be present before the plague spread and was not a result of exposure to the bacteria e)The Plague does not cause genetic mutations such as Delta-32.
_________________

All things are possible to those who believe.

Manager
Manager
avatar
Joined: 27 Jan 2013
Posts: 58
Location: India
Concentration: Social Entrepreneurship, Operations
Schools: ISB '15
GMAT 1: 740 Q50 V40
GPA: 3.51
WE: Other (Transportation)
Followers: 2

Kudos [?]: 18 [0], given: 33

Re: Researchers studying the spread of the Black Plague in [#permalink] New post 04 Apr 2013, 21:33
kalrac wrote:
Researchers studying the spread of the Black Plague in sixteenth-century England claim that certain people survived the epidemic because they carried a genetic mutation, known as Delta-32, that is known to prevent the bacteria that causes the Plague from overtaking the immune system. To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.

The researchers' hypothesis is based on which of the following assumptions?
a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.
b) The Plague is not similar to other diseases caused by bacteria.
c)Delta-32 did not exist in its current form until the sixteenth century.
d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.
e)The Plague does not cause genetic mutations such as Delta-32.



Please post the answers with explanations.


Got this question on one of MGMAT CATs. Even after reviewing the problem and reading some posts regarding this I can still not convince myself that E can be the right answer. Here is my submission regarding it -
To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.
As highlighted these two parts in the argument tell us two things
1. This town had an unusually large number of people who survived the Plague.
2. More than half of the descendants tested positive for DElta-32 in this town, a number three times as high as other locations
Now E says - The Plague does not cause genetic mutations such as Delta-32.
This cannot be assumed as per the argument. Had plague caused the mutations the proportion of people having Delta-32 would have been much higher in other locations where the plague was much more widespread than in this town which had fewer instances of plague.
In fact in this question I feel no answer is correct.
Can some experts enlighten me on this :shock:
1 KUDOS received
GMAT Pill Representative
User avatar
Joined: 07 Nov 2012
Posts: 346
Schools: LBS '14 (A)
GMAT 1: 770 Q48 V48
Followers: 133

Kudos [?]: 167 [1] , given: 4

Re: Researchers studying the spread of the Black Plague in [#permalink] New post 07 Apr 2013, 01:34
1
This post received
KUDOS
Dipankar6435 wrote:
kalrac wrote:
Researchers studying the spread of the Black Plague in sixteenth-century England claim that certain people survived the epidemic because they carried a genetic mutation, known as Delta-32, that is known to prevent the bacteria that causes the Plague from overtaking the immune system. To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.

The researchers' hypothesis is based on which of the following assumptions?
a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.
b) The Plague is not similar to other diseases caused by bacteria.
c)Delta-32 did not exist in its current form until the sixteenth century.
d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.
e)The Plague does not cause genetic mutations such as Delta-32.



Please post the answers with explanations.


Got this question on one of MGMAT CATs. Even after reviewing the problem and reading some posts regarding this I can still not convince myself that E can be the right answer. Here is my submission regarding it -
To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.
As highlighted these two parts in the argument tell us two things
1. This town had an unusually large number of people who survived the Plague.
2. More than half of the descendants tested positive for DElta-32 in this town, a number three times as high as other locations
Now E says - The Plague does not cause genetic mutations such as Delta-32.
This cannot be assumed as per the argument. Had plague caused the mutations the proportion of people having Delta-32 would have been much higher in other locations where the plague was much more widespread than in this town which had fewer instances of plague.
In fact in this question I feel no answer is correct.
Can some experts enlighten me on this :shock:


Hi dipankar,

The key thing you need to think about is the difference between the number of people who contracted the plague and the number of people who survived it.

The question talks about people who survive it, whilst you talk about numb of people who contract it.

Re-look in this light and it should be clearer....
_________________

Former GMAT Pill student, now on staff. Used GMATPILL OG 12 and nothing else: 770 (48,48) & 6.0



... and more

3 KUDOS received
Manager
Manager
avatar
Joined: 14 Nov 2008
Posts: 70
Followers: 2

Kudos [?]: 14 [3] , given: 1

Re: Researchers studying the spread of the Black Plague in [#permalink] New post 30 Aug 2013, 01:36
3
This post received
KUDOS
The researchers claim that Delta-32 prevents its carriers from contracting the
Plague. They support this claim by noting that a strikingly large percentage of
descendants of Plague survivors carry the mutation. We are asked to find an
assumption underlying the claim.
(A) The argument is specific to the relationship between Delta-32 and resistance
to the Plague. Other diseases are irrelevant.
(B) Again, the argument is specific to the relationship between Delta-32 and
resistance to the Plague. Other diseases are irrelevant.
(C) Delta-32 may have existed in its current form before the sixteenth century
and the merit of the argument would not change.
(D) The argument does not claim that Delta-32 prevents all bacteria-caused
disease.
(E) CORRECT. The researchers claim that Delta-32 prevented its carriers from
contracting the Plague on the basis of its presence in descendants of Plague
survivors. But it is theoretically possible that these descendants carry the
mutation Delta-32 because the Plague mutated the genes of their ancestors. In
order to claim that the mutation prevented the Plague, we must assume that the
Plague did not cause the mutation Delta-32.
Intern
Intern
avatar
Joined: 13 Apr 2011
Posts: 3
Followers: 1

Kudos [?]: 6 [0], given: 2

Re: Researchers studying the spread of the Black Plague in [#permalink] New post 06 May 2014, 15:51
Researchers studying the spread of the Black Plague in sixteenth-century England claim that certain people survived the epidemic because they carried a genetic mutation, known as Delta-32, that is known to prevent the bacteria that causes the Plague from overtaking the immune system. To support this hypothesis, the researchers tested the direct descendants of the residents of an English town where an unusually large proportion of people survived the Plague. More than half of these descendants tested positive for the mutation Delta-32, a figure nearly three times higher than that found in other locations.

The researchers' hypothesis is based on which of the following assumptions?
a) Delta-32 does not prevent a carrier from contracting any disease other than the Plague.
b) The Plague is not similar to other diseases caused by bacteria.
c)Delta-32 did not exist in its current form until the sixteenth century.
d)No one who tested positive for Delta-32 has ever contracted a disease caused by bacteria.
e)The Plague does not cause genetic mutations such as Delta-32

Conclusion: People survived the plague because they carried a genetic mutation Delta 32.

Negating each option, E stands out to break the conclusion.

-E = The plague causes the genetic mutation such as Delta 32. If the plague itself causes the mutation than all the people effected by the plague will possess the mutation which is the explanation for the premise provided.

Hence E.
Re: Researchers studying the spread of the Black Plague in   [#permalink] 06 May 2014, 15:51
    Similar topics Author Replies Last post
Similar
Topics:
Researchers studying the spread of the Black Plague in varun2203 2 07 Jul 2012, 05:08
Experts publish their posts in the topic Researchers studying the spread of the Black Plague in qtrip 5 22 Apr 2012, 09:44
As a result of the Black Death, the plague that afflicted dimri10 7 24 Jun 2011, 04:18
As a result of the Black Death, the plague that afflicted PedroPedro 7 31 Aug 2006, 04:37
Researchers did a study about the spread of disease X in a qhoc0010 6 12 Jan 2005, 15:11
Display posts from previous: Sort by

Researchers studying the spread of the Black Plague in

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.