Mendel's Laws of Inheritance — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Mendel's Laws of Inheritance.

Integrated problem-solving with multiple gene interactions

high

NEET is increasingly moving towards integrated questions. A predicted angle is to combine a Mendelian cross with an exception like incomplete dominance or co-dominance in a single problem, or to ask about the inheritance of three traits, requiring an extension of the dihybrid cross concept. For example, a question might involve a dihybrid cross where one trait shows complete dominance and the other shows incomplete dominance, asking for the resulting phenotypic ratios. This tests both foundational Mendelian principles and their modifications simultaneously, requiring a deeper analytical approach.

Application of probability in complex crosses

medium

While basic probability is tested in dihybrid crosses, future questions might involve calculating the probability of specific genotypes or phenotypes in crosses involving more than two genes, or in pedigree analysis where Mendelian principles are applied. This would require students to master the product rule and sum rule of probability, applying them systematically to each gene independently, rather than relying solely on memorized ratios. For instance, calculating the probability of a specific genotype from a trihybrid cross (AaBbCc x AaBbCc) without drawing a massive Punnett square.

Conceptual questions on the 'why' behind the laws

medium

Beyond simply stating the laws or calculating ratios, NEET might delve into the underlying biological reasons. For example, questions on why segregation occurs during meiosis, or how independent assortment relates to chromosome behavior during meiosis I. This would link Mendelian genetics directly to cell biology, specifically meiosis, requiring a more holistic understanding of the biological processes driving inheritance. Questions could also explore the historical context or the significance of Mendel's quantitative approach.