#21 - Specific Reference, Must Be True, Purpose

[Administrator]

Complete Question Explanation

The correct answer choice is (C).

Answer choice (A):

Answer choice (B):

Answer choice (C): This is the correct answer choice.

Answer choice (D):

Answer choice (E):

This explanation is still in progress. Please post any questions below!

[Etsevdos]

How should we generally go about this one?
I avoided C because very close to definition, which is generally incorrect. Is this just an instance of test makers using that knowledge?

[nicholaspavic]

Hi etsevdos,

Yes, they tried to throw us for a loop there, didn't they? It's also to be found in the very sentence they are referring to so contextually it works well as an answer choice too.

Thanks for the great question and I hope this helps!

[T.B.Justin]

Hey,

Ok, I am having one of those (wow, how did I miss that moments).

[katesomerville]

Can someone point out the text evidence that would indicate "imperfect copying" is applicable here?

Thanks!

[Luke Haqq]

Hi katesomerville!

Textual evidence for answer choice (C) can be found around lines 24 to 27: "The most common type of mutation is a sort of genetic 'typo' that occurs when a cell’s DNA is transcribed into RNA, the molecule that helps to assemble proteins." The "DNA is transcribed into RNA" is the copying part, and that it is a mutation or typo is the imperfect part.

[Dancingbambarina]

Struggling with D. I understand it's wrong because the Author made no mention of overlooking it from the OBSERVER'S perspective. But I misconstrued this as meaning the CELL overlooks this (like a typer makes a mistake). So I thought D meant that this mutation is referred to as a typo because it is overlooked by the cell as the mistaken copying THAT IT FACTUALLY IS.

I understand I am wrong, but is there a bulletproof way to never misconstrue like this again?

Thank you

[Dana D]

Hey dancing,

I think closer reading will help you on RC questions. Here, you could flag this answer choice both because being 'overlooked' is never mentioned in the passage at the line cited and because it makes little sense in the context of a cell - cells don't have minds or autonomy to overlook something in the way that word is used.

With specific reference questions like this, you have the benefit of a certain line to reference - make sure you use it and read closely, but also that you limit yourself to the lines you are asked to consider (general tip, not an issue for you here).

Hope that helps!