Logical ReasoningDifficulty: Medium

PT111 S4 Q15 Explanation

Geneticist: Ethicists have fears, many

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsRole

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Stimulus

Geneticist: Ethicists have fears, many of them reasonable, about the prospect of cloning human beings, that is, producing exact genetic duplicates. But the horror-movie image of a wealthy person creating an army of exact duplicates is completely unrealistic. Clones must be raised and educated, a long-term process that could never produce adults the possibility that wealthy individuals might use clones as living “organ banks.”

What this question is testing

Role

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
15.

The claim that cloning will not produce adults with identical personalities plays which one of the following roles

Answer choices

  1. Too Strong: Various14% picked this

    It is a reason for dismissing the various fears raised by ethicists regarding the cloning

    This answer would be great if it said "It is a reason for dismissing one specific fear". The author acknowledges that are are many reasonable fears about cloning that ethicists have. She isn't trying to dismiss all of them, just the one about an army of exact duplicates. Also, it's not clear that the ethicists are fearful of a wealthy person building an army of exact duplicates. That scenario is not actually attributed to them; it's attributed to something that gets portrayed in horror movies.

  2. Too Strong: Never Bad Conclusion Match4% picked this

    It is evidence that genetic clones will never be

    This answer correctly identifies our claim as evidence but incorrectly calls the conclusion, "Genetic clones will never be produced successfully". Our author never said that. The conclusion is that "the notion that a wealthy person will create an army of exact duplicates is unrealistic".

  3. Too Strong: only Bad Conclusion Match0% picked this

    It illustrates the claim that only wealthy people would be able to have genetic duplicates

    This answer correctly identifies our claim as supporting (to illustrate a claim is to support it) but incorrectly calls the conclusion, "Only wealthy people will have genetic duplicates made of themselves". Our author never said that. The conclusion is that "the notion that a wealthy person will create an army of exact duplicates is unrealistic".

  4. Bad Conclusion Match3% picked this

    It is evidence for the claim that wealthy people might use genetic duplicates of themselves as sources of

    This answer correctly identifies our claim as evidence but incorrectly calls the conclusion, "Wealthy people might use genetic duplicates as organ banks". The conclusion is that "the notion that a wealthy person will create an army of exact duplicates is unrealistic". We can tell that the claim we're being asked about is support for the 2nd sentence rather than support for the 4th sentence, by doing the why should I believe that test? Why should we believe that ... it's unrealistic to think that a wealthy person will create an army of exact duplicates? Because ... cloning will not produce adults with identical personalities. (Okay, makes sense) Why should we believe that ... wealthy people will use clones as a source of compatible organ transplants? Because ... cloning will not produce adults with identical personalities? (That doesn't make sense) The reason they'll use clones as organ banks is that clones will not produce adults with identical personalities? That's not right. The reason they'll use clones as organ banks is that when you have an organ transplantation surgery, the body's immune system will often reject the new organ, sensing it as a foreign intruder. However, the more genetically similar the source of the organ is (ideally a sibling, or even more ideally a clone), the more likely that the organ transplant will be "accepted" by the body. None of that is said, which is how we know that the last sentence was supported by anything.

  5. Correct78% picked this

    It is a reason for discounting one possible fear concerning the cloning

    Why this is right

    This answer correctly identifies our claim as supporting (it is a reason for), and it correctly identifies the conclusion. The conclusion is that "the notion that a wealthy person will create an army of exact duplicates is unrealistic". That possible fear concerning cloning is unrealistic, the author says (even though many of the fears ethicists have are reasonable ones).

    Skill tested: Role · how this choice captures the argument's function is the move to repeat next time.

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