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The statement that correctly… (Class 10 Science 2023, Q10)

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ScienceCBSE Class 10 · Board exam 2023, set 31/1/1 · 1 mark · MCQ

CBSE Class 10 Science 2023: question 10

Set in the CBSE Class 10 board exam of 2023, paper 31/1/1, section A, question 10, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q10 · 1 mark · MCQHeredity

The statement that correctly describes the characteristic(s) of a gene is :

  1. (A)In individuals of a given species, a specific gene is located on a particular chromosome.
  2. (B)A gene is not the information source for making proteins in the cell.
  3. (C)Each chromosome has only one gene located all along its length.
  4. (D)All the inherited traits in human beings are not controlled by genes.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 31/1/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

What does a gene code for?

Hint 2

Does a chromosome carry one gene or many genes?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. A gene is a section of DNA that carries the information for making a protein. It occupies a fixed position on a particular chromosome in a species.

  2. Options (B), (C) and (D) contradict this: genes do code for proteins, a chromosome carries many genes, and inherited traits are controlled by genes. So the answer is (A).

    1 mark

Answer: Option (A)

Where the marks are

  • Selects (A) (1 mark)

Revise the chapter

  • Chapter: Heredity (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Heredity, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 31/1/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.