Answer: No selection, no mutation, no migration, random mating, large population size (all 5 conditions).
- A Active and ongoing natural selection acting consistently across the whole population
- B No selection, no mutation, no migration, random mating, large population size (all 5 conditions)
- C A consistently small population size combined with frequent random genetic drift
- D Sustained, deliberate inbreeding occurring among closely related individuals in the population
Correct answer: B. No selection, no mutation, no migration, random mating, large population size (all 5 conditions)
Explanation: Hardy-Weinberg equilibrium (p<sup>2</sup> + 2pq + q<sup>2</sup> = 1): allele frequencies stay constant if no selection, no mutation, no migration, random mating, and large population.
Punnett square for a monohybrid cross between two heterozygous (Tt) parents, showing the 3:1 phenotypic ratio predicted by Mendel's Law of Segregation.
Concept context
Mendel's laws, inheritance patterns, DNA structure, and molecular biology. Core of NEET biology.
Read the full Principles of Inheritance and Variation notes →