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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. [1] straightforward exam-ready
In pea plants, two different traits such as seed colour and seed shape are inherited independently of each other. The most likely reason for this is that: ((A)) Each gene controlling a trait is located on a separate chromosome ((B)) All genes are located on the same chromosome but separated by large gaps ((C)) Dominant genes are always located on larger chromosomes ((D)) Genes controlling unrelated traits are always found in the same nucleus
  1. A Gene
  2. B Chromosome
  3. C Ribosome
  4. D Nucleus
Generated by claude-sonnet-4-6 · 2026-06-26 01:02 · grounding rag
Model Answer

(A) Each gene controlling a trait is located on a separate chromosome — so the two traits assort independently during gamete formation (Mendel's Law of Independent Assortment).

Explanation

The key concept is independent assortment: genes on different (non-homologous) chromosomes segregate independently during meiosis. The textbook states that factors controlling seed shape and seed colour "recombine" freely, producing new trait combinations in F2 — this only happens when the genes are on separate chromosomes. Options B, C, and D are incorrect biological statements not supported by the chapter.

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