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26 Feb 2020, 02:53
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69% (02:22) correct
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A certain species of bird has two basic varieties, crested and noncrested. The bird, which generally live in flocks that contain only crested or only noncrested birds, tend to select mates of the same variety as themselves. However, if a bird that is raised in a flock in which all other members are crested is later moved to a mixed flock, then that bird—whether crested or noncrested—is likely to select a crested mate. This fact indicates that the birds’ preference for crested or noncrested mates is learned rather than genetically determined.
Which one of the following, if true, provides the most support for the argument?
(A) Birds of other species also tend to show preferences for mates that have one or another specific physical feature.
(B) In general there are few behavioral differences between the crested and noncrested birds of the species.
(C) Both the crested and noncrested birds of the species tend to select mates that are similar to themselves in size and age.
(D) If a crested bird of the species is raised in captivity apart from other birds and is later moved to a mixed flock, that bird is likely to select a crested mate.
(E) If a bird of the species is raised in a flock that contains both crested and noncrested birds, that bird shows no preference for one variety or the other in its selection of a mate.
Which one of the following, if true, provides the most support for the argument?
(A) Birds of other species also tend to show preferences for mates that have one or another specific physical feature.
(B) In general there are few behavioral differences between the crested and noncrested birds of the species.
(C) Both the crested and noncrested birds of the species tend to select mates that are similar to themselves in size and age.
(D) If a crested bird of the species is raised in captivity apart from other birds and is later moved to a mixed flock, that bird is likely to select a crested mate.
(E) If a bird of the species is raised in a flock that contains both crested and noncrested birds, that bird shows no preference for one variety or the other in its selection of a mate.
04 Mar 2020, 08:54
Kudos
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A certain species of bird has two basic varieties, crested and noncrested.
The bird, which generally live in flocks that contain only crested or only noncrested birds, tend to select mates of the same variety as themselves. However, if a bird that is raised in a flock in which all other members are crested is later moved to a mixed flock, then that bird—whether crested or noncrested—is likely to select a crested mate.
what the author is concluding. -- Even if you are NOT a crested bird you would prefer a mate who is crested (because there are only crested birds available). Genetics has nothing to do with this concept of mate selection.
pre -thinking -->
if there is a bird that grew up only is certain group still prefers a partner that is mixed in nature.
or if there is a bird that is raised in a certain group would NOT prefer their own kind(genetic relation).
A) Birds of other species also tend to show preferences for mates that have one or another specific physical feature. - GENETICS
(B) In general there are few behavioral differences between the crested and noncrested birds of the species. - IRRELEVANT but keep it.
(C) Both the crested and noncrested birds of the species tend to select mates that are similar to themselves in size and age. IRRELEVANT but keep it.
(D) If a crested bird of the species is raised in captivity apart from other birds and is later moved to a mixed flock, that bird is likely to select a crested mate. - Strengthens GENETIC case
(E) If a bird of the species is raised in a flock that contains both crested and non crested birds, that bird shows no preference for one variety or the other in its selection of a mate. - Fits pre-thinking.
This fact indicates that the birds’ preference for crested or non crested mates is learned rather than genetically determined.
The bird, which generally live in flocks that contain only crested or only noncrested birds, tend to select mates of the same variety as themselves. However, if a bird that is raised in a flock in which all other members are crested is later moved to a mixed flock, then that bird—whether crested or noncrested—is likely to select a crested mate.
what the author is concluding. -- Even if you are NOT a crested bird you would prefer a mate who is crested (because there are only crested birds available). Genetics has nothing to do with this concept of mate selection.
pre -thinking -->
if there is a bird that grew up only is certain group still prefers a partner that is mixed in nature.
or if there is a bird that is raised in a certain group would NOT prefer their own kind(genetic relation).
A) Birds of other species also tend to show preferences for mates that have one or another specific physical feature. - GENETICS
(B) In general there are few behavioral differences between the crested and noncrested birds of the species. - IRRELEVANT but keep it.
(C) Both the crested and noncrested birds of the species tend to select mates that are similar to themselves in size and age. IRRELEVANT but keep it.
(D) If a crested bird of the species is raised in captivity apart from other birds and is later moved to a mixed flock, that bird is likely to select a crested mate. - Strengthens GENETIC case
(E) If a bird of the species is raised in a flock that contains both crested and non crested birds, that bird shows no preference for one variety or the other in its selection of a mate. - Fits pre-thinking.
This fact indicates that the birds’ preference for crested or non crested mates is learned rather than genetically determined.
General Discussion
08 Sep 2021, 23:08
Kudos
Bookmarks
A certain species of bird has two basic varieties, crested and noncrested. The bird, which generally live in flocks that contain only crested or only noncrested birds, tend to select mates of the same variety as themselves. However, if a bird that is raised in a flock in which all other members are crested is later moved to a mixed flock, then that bird—whether crested or noncrested—is likely to select a crested mate. This fact indicates that the birds’ preference for crested or noncrdeested mates is learned rather than genetically determined.
Conclusion: Choose mate because of learning, NOT because of genetic determination
Which one of the following, if true, provides the most support for the argument?
(A) Birds of other species also tend to show preferences for mates that have one or another specific physical feature. --> Genetic
(B) In general there are few behavioral differences between the crested and noncrested birds of the species.
If they are the same, then how to choose?
(C) Both the crested and noncrested birds of the species tend to select mates that are similar to themselves in size and age.
If they are the same, then how to choose?
(D) If a crested bird of the species is raised in captivity apart from other birds and is later moved to a mixed flock, that bird is likely to select a crested mate.
Since that crested bird was raised in a specific place --> She/he has no choice.
That bird is likely to select the same crested mate --> genetic
(E) If a bird of the species is raised in a flock that contains both crested and noncrested birds, that bird shows no preference for one variety or the other in its selection of a mate.
This is the correct answer.
Conclusion: Choose mate because of learning, NOT because of genetic determination
Which one of the following, if true, provides the most support for the argument?
(A) Birds of other species also tend to show preferences for mates that have one or another specific physical feature. --> Genetic
(B) In general there are few behavioral differences between the crested and noncrested birds of the species.
If they are the same, then how to choose?
(C) Both the crested and noncrested birds of the species tend to select mates that are similar to themselves in size and age.
If they are the same, then how to choose?
(D) If a crested bird of the species is raised in captivity apart from other birds and is later moved to a mixed flock, that bird is likely to select a crested mate.
Since that crested bird was raised in a specific place --> She/he has no choice.
That bird is likely to select the same crested mate --> genetic
(E) If a bird of the species is raised in a flock that contains both crested and noncrested birds, that bird shows no preference for one variety or the other in its selection of a mate.
This is the correct answer.
