ICSE Class 10 Genetics — Basic Fundamentals — Mock Test (2027)
Free online mock test for Genetics — Basic Fundamentals (ICSE Class 10 Biology) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Genetics — Basic Fundamentals chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.In a certain species of animals, black fur (B) is dominant over brown fur (b). What are the possible genotypic and phenotypic ratios of the offspring when pure breeding parents of different colours are crossed?
- A.Genotypic ratio: 100% Bb; Phenotypic ratio: 100% Black fur
- B.Genotypic ratio: 1 BB : 1 bb; Phenotypic ratio: 1 Black : 1 Brown
- C.Genotypic ratio: 1 BB : 2 Bb : 1 bb; Phenotypic ratio: 3 Black : 1 Brown
- D.Genotypic ratio: 100% BB; Phenotypic ratio: 100% Black fur
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2.A biology teacher asked her students to give two examples of inherited traits in humans. Raj said: Eye color and height. Sonu said: Skills and hobbies. Lata said: Blood type and hair color. Abhay said: Pinna and Ossicles. Who were correct?
- A.Raj and Lata
- B.Sonu and Abhay
- C.Raj and Abhay
- D.Lata and Sonu
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3.Which of the following is not a reason Mendel selected garden peas for his experiments?
- A.Peas have a small reproductive span
- B.Peas are self-pollinated
- C.Peas are uni-sexual
- D.Cross-pollination could be done artificially
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4.What happens when a male has an abnormal gene on his X chromosome?
- A.The Y chromosome masks it
- B.The disease occurs because there is no gene on the Y chromosome to mask it
- C.The abnormal gene is repaired by the body
- D.The gene causes no effect in males
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5.The physical expression of genes in an individual is called:
- A.Phenotype
- B.Genotype
- C.Allele
- D.Genome
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