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Naturalist: One of the most powerful forces of natural selection is th

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Naturalist: One of the most powerful forces of natural [#permalink]

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New post 16 Dec 2010, 10:49
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A
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Naturalist: One of the most powerful forces of natural selection is that exercised by individuals in choosing a mate. Among most insects and vertebrates, males do the courting and females do the choosing. This division of labor makes sense. Sperm are less costly, energetically speaking, than eggs and are always more abundant. All other factors being equal, therefore, a male optimizes his contribution to the gene pool by mating as frequently as possible. On the other hand, a female seeks quality—often measured by the physical appearance of the male—rather than quantity, because her energy investment in each act of reproduction is typically greater than the male’s investment

Which of the following is a logical consequence of the ideas offered by the author?

A) This explains the sometimes violent skirmishes between males competing for territory.
B) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male.
C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
D) Therefore, in any given species, the females will outnumber the males.
E) This, in part, explains why breeding females often cluster for protection of their offspring.
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 10 May 2013, 23:25
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A) This explains the sometimes violent skirmishes between males competing for territory. - I dont see how territories will enter in this argument
B) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male. No logical conclusion can be made for the killing of the male
C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females. My answer. Since the male is competing for sexual attention from male he is bound to produce striking visual and other adaptations.
D) Therefore, in any given species, the females will outnumber the males. No conclusion can be made about this
E) This, in part, explains why breeding females often cluster for protection of their offspring.No conclusion can be made for this
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 10 May 2013, 23:52
i guess E, because of energy investment in reproduction by females
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 11 May 2013, 01:12
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Those are the key points in the passage.

Naturalist: One of the most powerful forces of natural selection is that exercised by individuals in choosing a mate.
Male optimizes his contribution to the gene pool by mating as frequently as possible.
A female seeks quality—often measured by the physical appearance of the male—rather than quantity.

Which of the following is a logical consequence of the ideas offered by the author?

A) This explains the sometimes violent skirmishes between males competing for territory.
No way we can conlcude something about territory from the info above.
B) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male.
Again, this conclusion is not a consequence of the idead in the passage.
C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
CORRECT: because female seeks physical appearance of the male, this means that " striking visual" males are more likely to reproduce and to transmit their characteristics to the next generation.
D) Therefore, in any given species, the females will outnumber the males.
Out of scope.
E) This, in part, explains why breeding females often cluster for protection of their offspring.
We cannot say so just by reading the text
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 11 May 2013, 02:10
Zarrolou wrote:
C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
CORRECT: because female seeks physical appearance of the male, this means that " striking visual" males are more likely to reproduce and to transmit their characteristics to the next generation.


I'm not sure how transmitting of characteristics contributes to the logical consequence of the idea. Can you please elaborate on that? Thanks.
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 11 May 2013, 02:23
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OA: C

The question stem reflects on the ideas generated by the paragraph rather than on the consequences (conclusion). There are several ideas presented in the answer choices, each one alluding in some way to mate selection. Look for a logical conclusion.
(C) is the best choice because the paragraph talks of natural selection and choosing a mate; we might expect the male of the species to have, for example, colorful plumage to attract the female.

(A) is incorrect.

(A) describes something that might occur in nature, but does not follow logically from the paragraph.

(B) is incorrect.

(B) is incorrect because the paragraph focuses upon selection, not dismissal, of a mate.

(D) is incorrect.

(D) is incorrect. The ratio of females to males has little or nothing to do with natural selection and choosing a mate, as described in the paragraph.

(E) is incorrect.

(E) deals with raising the young, another subject not alluded to in the paragraph.
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 11 May 2013, 03:54
connexion wrote:
Zarrolou wrote:
C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
CORRECT: because female seeks physical appearance of the male, this means that " striking visual" males are more likely to reproduce and to transmit their characteristics to the next generation.


I'm not sure how transmitting of characteristics contributes to the logical consequence of the idea. Can you please elaborate on that? Thanks.


The famale seeks quality=> physical appearance of the male, so the "better looking" males are more likely to reproduce than than the others.
So if the striking male reproduces, its characteristics will pass to the next generation ( and because the "ugly" male is not likely to reproduce, its characteristics will not pass to the next generation). This process has as result the fact that will produce striking visual male because the next generation inherit the features of their parents

C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.

Is correct because almost only the striking visual males will reproduce, and as result the next generation will have its characteristics.

Does this help? Let me know
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Re: Naturalist: One of the most powerful... [#permalink]

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New post 12 May 2013, 07:09
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Indeed the answer must be C...I think this is an inference question and we must not select something that is way too strong or out of scope..Clearly ..there are only two contenders C and E.If we think over what is tated in e , we end up finding that it just explains the fact that why female are more concerned about the eggs. On the contrary we need an inference that deals with the passage as a whole. The passage is concerned with the natural selection from male and female point of view. Hence, we find that the answer must be C.

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Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 27 Aug 2013, 00:03
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Naturalist: One of the most powerful forces of natural selection is that exercised by individuals in choosing a mate. Among most insects and vertebrates, males do the courting and females do the choosing. This division of labor makes sense. Sperm are less costly, energetically speaking, than eggs and are always more abundant. All other factors being equal, therefore, a male optimizes his contribution to the gene pool by mating as frequently as possible. On the other hand, a female seeks quality—often measured by the physical appearance of the male—rather than quantity, because her energy investment in each act of reproduction is typically greater than the male’s investment.

Which of the following is a logical consequence of the ideas offered by the author?

a) This explains the sometimes violent skirmishes between males competing for territory.
b) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male.
c) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
d) Therefore, in any given species, the females will outnumber the males.
e) This, in part, explains why breeding females often cluster for protection of their offspring.
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Re: Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 27 Aug 2013, 01:10
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Important Fact: All other factors being equal, therefore, a male optimizes his contribution to the gene pool by mating as frequently as possible. On the other hand, a female seeks quality—often measured by the physical appearance of the male—rather than quantity, because her energy investment in each act of reproduction is typically greater than the male’s investment.

Which of the following is a logical consequence of the ideas offered by the author?

This question belongs to “MUST BE TRUE” family, so fact test is the most important. Any answer that does not pass the fact test is wrong.

ANALYZE EACH ANSWER:

a) This explains the sometimes violent skirmishes between males competing for territory.
Wrong. Out of scope.

b) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male.
Wrong. Out of scope.

c) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
Correct. The highlight part clearly explains why physical appearance of the male is important.

d) Therefore, in any given species, the females will outnumber the males.
Wrong. Out of scope. Nothing about which species is outnumber the other.

e) This, in part, explains why breeding females often cluster for protection of their offspring.
Wrong. Out of scope.

Hope it helps.
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Re: Naturalist: One of the most powerful forces of natural [#permalink]

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New post 21 Apr 2014, 11:49
erroneously picked E after thinking about the real world reality of animal, which is not allowed in answering every CR question,
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Re: Naturalist: One of the most powerful forces of natural [#permalink]

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New post 12 May 2015, 05:58
shrive555 wrote:
Naturalist: One of the most powerful forces of natural selection is that exercised by individuals in choosing a mate. Among most insects and vertebrates, males do the courting and females do the choosing. This division of labor makes sense. Sperm are less costly, energetically speaking, than eggs and are always more abundant. All other factors being equal, therefore, a male optimizes his contribution to the gene pool by mating as frequently as possible. On the other hand, a female seeks quality—often measured by the physical appearance of the male—rather than quantity, because her energy investment in each act of reproduction is typically greater than the male’s investment

Which of the following is a logical consequence of the ideas offered by the author?

A) This explains the sometimes violent skirmishes between males competing for territory.
B) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male.
C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
D) Therefore, in any given species, the females will outnumber the males.
E) This, in part, explains why breeding females often cluster for protection of their offspring.



Chosen C and D.D ELIMINATED BECAUSE IT IS TOO MUCH GENERALIZED(in any specie)
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Re: Naturalist: One of the most powerful forces of natural [#permalink]

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New post 07 Aug 2016, 21:02
Every other choice is out of scope. The argument partially states the same content as C .

C) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
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Re: Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 04 Jul 2017, 10:45
AkshayChittoria wrote:
Naturalist: One of the most powerful forces of natural selection is that exercised by individuals in choosing a mate. Among most insects and vertebrates, males do the courting and females do the choosing. This division of labor makes sense. Sperm are less costly, energetically speaking, than eggs and are always more abundant. All other factors being equal, therefore, a male optimizes his contribution to the gene pool by mating as frequently as possible. On the other hand, a female seeks quality—often measured by the physical appearance of the male—rather than quantity, because her energy investment in each act of reproduction is typically greater than the male’s investment.

Which of the following is a logical consequence of the ideas offered by the author?

a) This explains the sometimes violent skirmishes between males competing for territory.
b) Often, the female of the species has little or no use for the male after conception or fertilization, and in some cases she kills the male.
c) This process of sexual selection is more apt to produce striking visual and other adaptations among males than among females.
d) Therefore, in any given species, the females will outnumber the males.
e) This, in part, explains why breeding females often cluster for protection of their offspring.


I found only option c touching the premises.All other option looks irrelevant
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Re: Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 07 Jul 2017, 07:42
Merged topics. Please, search before posting questions!
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Re: Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 08 Jul 2017, 01:55
The answer is C
Males contribute to the gene pool by mating as frequently as possible .They have developed striking visual mutations fro attracting females .
Option C says this .
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Re: Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 21 Aug 2017, 23:50
the key here is "striking visual", I never thought the word refers to the quality in appearance that males compete for.
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Re: Naturalist: One of the most powerful forces of natural selection is th [#permalink]

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New post 20 May 2018, 10:31
The argument was so interesting that I forgot the basic rule of Inference questions- no new information. Though my curiosity got me drowned in terms of logic, C is the only choice that was in scope and that avoided any new information. :-)
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Re: Naturalist: One of the most powerful forces of natural selection is th   [#permalink] 20 May 2018, 10:31
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