SAT Reading and Writing Practice Question #481 (Hard (800)) | Test Citadel
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SAT Reading and Writing Difficulty: Hard (800)

Digital SAT Reading and Writing Practice Question #481

Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.

In 1990, researchers studying the agouti gene in mice made a groundbreaking discovery regarding epigenetics. Mice expressing the mutant agouti gene typically display a yellow coat and a propensity for obesity. However, when pregnant mice carrying this mutation were fed a diet rich in methyl donors—compounds that facilitate DNA methylation, a process known to suppress gene transcription—their offspring were predominantly brown and maintained a normal weight. Crucially, genetic sequencing revealed that these healthy offspring still possessed the mutant agouti gene in its entirety. Which choice most logically completes the text?
Select Your Answer:
Socratic AI Engine Step-by-Step Derivation
0ms Precomputed
Tactical Insight (Hint 1)

Rely strictly on explicit statements in the passage. Eliminate any option that requires external assumptions or twists the author's stated nuance.

Elimination Framework (Hint 2)

Elimination Strategy: In digital reading/writing, 3 out of 4 choices contain an active flaw (half-right/half-wrong, too extreme, or wrong transition type). Cross out options with absolute words like "always", "proves", or "never".

Masterclass Solution & Distractor Trap Analysis

Let's break down this 800-level inference question step-by-step. The text sets up a scenario: mice have a mutant gene that normally causes a yellow coat and obesity. When the mothers are fed a specific diet, the offspring are brown and norm...

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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