Answer: Small isolated populations.
- A Large, stable populations
- B Small isolated populations
- C Populations with high gene flow
- D Outcrossing populations
Correct answer: B. Small isolated populations
Explanation: Genetic drift: random changes in allele frequencies. Has the greatest effect in small populations where chance can significantly shift allele frequencies.
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 →