Give reason for the following : During reproduction inheritance of different proteins will lead to altered body designs.
Generated by claude-sonnet-4-6 · 2026-06-15 06:46 · grounding rag
Model Answer
The DNA present in the cell nucleus acts as the blueprint for making proteins. During reproduction, DNA copying takes place, but this process is not always perfectly accurate. Slight variations (errors) can occur in the copied DNA.
If the DNA information is changed due to these variations, different proteins will be made by the cell. Since proteins determine the structure and functioning of the body, different proteins will ultimately lead to altered body designs in the offspring.
Thus, inheritance of different (altered) proteins — resulting from changes in DNA — causes changes in body design during reproduction.
Source: Chapter 7, Section 7.1 — Do Organisms Create Exact Copies of Themselves?
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Explanation
- The examiner expects you to establish the chain: DNA change → different proteins → altered body design.
- Key terms to include: DNA, information source, proteins, body design.
- The passage directly states: "The DNA in the cell nucleus is the information source for making proteins. If the information is changed, different proteins will be made. Different proteins will eventually lead to altered body designs." — quote this logic, not word-for-word, but capture the cause-effect chain.
- This is typically a 2–3 mark reason-based question; keep the answer focused on the three-step logic.