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NEET 2026
Exam
NEET
Year
2026
Subject
Biology
Chapter
Chapter

NEET 2026 · Biology · Chapter

When constructing a Punnett square to analyze a genetic cross, what...

When constructing a Punnett square to analyze a genetic cross, what is the standard convention for representing the possible gametes produced by the parents according to NCERT?

Options

  1. AInside the central boxes of the square
  2. BOn two sides, usually the top row and left column
  3. CExclusively along the bottom row and right column
  4. DAs a final ratio below the square

Correct answer

B. On two sides, usually the top row and left column

Step-by-step solution

According to the NCERT Biology textbook, when constructing a Punnett square, the possible gametes produced by the parents are written on two sides, usually the top row and the left column. All possible combinations of these gametes, representing the zygotes or offspring, are then filled into the central boxes of the square.

Answer: On two sides, usually the top row and left column
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