LSAT 128 | Section 3 | Logical Reasoning: Q13

LR Question 13 Explanation

QUESTION TEXT: Sexual reproduction is achieved when the gamete of a male …

QUESTION TYPE: Must Be True

ANALYSIS: This is what we know:

1. Sexual reproduction happens when a male and female gamete form to create a new cell.
2. The two gametes contribute equally to the genetic material in the nucleus.
3. But the genetic material in the cytoplasm is contributed exclusively by the female.
4. GM62 (a genetic material) is found only in cytoplasm.

The correct answer will be a logical inference based on the facts provided. The most straightforward inference is that since GM62 is located only in the cytoplasm and the genetic material in the cytoplasm is inherited only from the female gamete, only females can pass GM62 to offspring.

___________

1. Too strong. Only females can contribute GM62, but that doesn’t mean all females do.
2. CORRECT. See above.
3. The passage never mentions the relative quantity or distribution of genetic materials across different parts of the cell.
4. This is never mentioned nor implied. Way too far.
5. The passage gives no indication that just because only the female gamete provides this material, there must necessarily be a material that only a male gamete can provide. That’s entirely speculative.