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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [2] medium initial-understanding
When variations arise in a new DNA copy during cell division, what are the two possible outcomes for the organism carrying that variation?
Generated by claude-sonnet-4-6 · 2026-06-26 01:00 · grounding rag
Model Answer

When a variation arises in a new DNA copy during cell division, there are two possible outcomes:

  1. The cell dies — if the variation is so drastic that the new DNA copy cannot work with the inherited cellular apparatus.
  2. The cell survives — if the variation is minor, the cell continues to live, being subtly different from the original.

Source: Chapter 7, Section 7.1

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Explanation

The examiner expects both outcomes stated clearly — death (drastic variation) and survival (minor variation). The key phrase "subtle difference" signals understanding that surviving variants are similar but not identical. Avoid over-explaining; one crisp line per outcome is enough for 2 marks.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.