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Botanist: In an experiment, scientists raised domesticated radishes in

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Botanist: In an experiment, scientists raised domesticated radishes in  [#permalink]

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New post 12 Sep 2018, 01:10
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Botanist: In an experiment, scientists raised domesticated radishes in a field with wild radishes, which are considered weeds. Within several generations,"
"the wild radishes began to show the same flower color as the domesticated ones. This suggests that resistance to pesticides, which is often a genetically engineered trait, would also be passed from domesticated crop plants to their relatives that are considered weeds.

Which one of the following, if true, most strengthens the botanist's argument?

(A) It is much easier in principle for genetic traits to be passed from wild plants to their domesticated relatives than it is for such traits to be passed from the domesticated plant to the wild relative.

(B) When the ratio of domesticated radishes to wild radishes in the field increased, the speed with which the flower color passed to the wild radishes also increased."

(C) Radishes are not representative of crop plants in general with respect to the ease with which various traits are passed among members of closely related species ."

(D) The flower color of the domesticated radishes had not been introduced into them via genetic engineering."

(E) It is more difficult for flower color to be transferred between domesticated and wild radishes than it is for almost any other trait to be passed between any two similarly related plant species.

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Re: Botanist: In an experiment, scientists raised domesticated radishes in  [#permalink]

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New post 12 Sep 2018, 07:21
AshutoshB wrote:
Botanist: In an experiment, scientists raised domesticated radishes in a field with wild radishes, which are considered weeds. Within several generations,"
"the wild radishes began to show the same flower color as the domesticated ones. This suggests that resistance to pesticides, which is often a genetically engineered trait, would also be passed from domesticated crop plants to their relatives that are considered weeds.

Which one of the following, if true, most strengthens the botanist's argument?

(A) It is much easier in principle for genetic traits to be passed from wild plants to their domesticated relatives than it is for such traits to be passed from the domesticated plant to the wild relative.

(B) When the ratio of domesticated radishes to wild radishes in the field increased, the speed with which the flower color passed to the wild radishes also increased."

(C) Radishes are not representative of crop plants in general with respect to the ease with which various traits are passed among members of closely related species ."

(D) The flower color of the domesticated radishes had not been introduced into them via genetic engineering."

(E) It is more difficult for flower color to be transferred between domesticated and wild radishes than it is for almost any other trait to be passed between any two similarly related plant species.

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Imo E

If it very difficult for the color to show on the weeds but still the weeds acquire color in several generation then all the traits can be easily acquired. This is what E is saying essentially.
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Re: Botanist: In an experiment, scientists raised domesticated radishes in  [#permalink]

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New post 12 Sep 2018, 08:23
AshutoshB wrote:
Botanist: In an experiment, scientists raised domesticated radishes in a field with wild radishes, which are considered weeds. Within several generations,"
"the wild radishes began to show the same flower color as the domesticated ones. This suggests that resistance to pesticides, which is often a genetically engineered trait, would also be passed from domesticated crop plants to their relatives that are considered weeds.

Which one of the following, if true, most strengthens the botanist's argument?


Prethinking -> if we can show some causal connection between change in colour and genetics of these plants, we will strengthen the argument.

(A) It is much easier in principle for genetic traits to be passed from wild plants to their domesticated relatives than it is for such traits to be passed from the domesticated plant to the wild relative. Opposite

(B) When the ratio of domesticated radishes to wild radishes in the field increased, the speed with which the flower color passed to the wild radishes also increased." Irrelevant - we are not concerned with the speed

(C) Radishes are not representative of crop plants in general with respect to the ease with which various traits are passed among members of closely related species ." weakens

(D) The flower color of the domesticated radishes had not been introduced into them via genetic engineering." irrelevant

(E) It is more difficult for flower color to be transferred between domesticated and wild radishes than it is for almost any other trait to be passed between any two similarly related plant species. correct. strengthens the argument. If the transfer of color is the most difficult trait then other traits are likely to be transferred more easily
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Re: Botanist: In an experiment, scientists raised domesticated radishes in   [#permalink] 12 Sep 2018, 08:23
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