Q1 MCQ Drill: 2025 Life Sciences P2 (2025 NSC October/November National Examination)

Life Sciences Past Paper Question 1 Drill Level 1: Knowledge & Recall

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4 multiple-choice questions taken verbatim from Section A of the official 2025 NSC October/November National Examination Life Sciences Paper 2, auto-marked against the official marking guideline. Questions that rely on diagrams or graphs are excluded - see the full paper for those.

Question 1 of 4 2 Marks

A gene is …

A. the complete set of chromosomes of an organism.

B. a segment on a chromosome, coding for a characteristic.

C. the haploid number of chromosomes in a cell.

D. a triplet of bases that codes for an amino acid.

Question 2 of 4 2 Marks

The significance of DNA replication is that the cells formed at the end of mitosis will …

A. be genetically identical.

B. contain half the number of chromosomes.

C. be genetically different.

D. have double the number of chromosomes.

Question 3 of 4 2 Marks

Which ONE of the following statements is a feature of punctuated equilibrium?

A. Individual organisms adapt to changes in the environment.

B. The inheritance of acquired characteristics

C. There are long periods of little or no change in a population.

D. The more a structure is used, the more it develops.

Question 4 of 4 2 Marks

Haemophilia is …

A. characterised by the inability to distinguish between red and green.

B. caused by a mutation of an allele on the X-chromosome.

C. caused by non-disjunction of chromosomes during meiosis.

D. caused by an allele carried on an autosome.

Q1 MCQ Drill: 2025 Life Sciences P2 (2025 NSC October/November National Examination)

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