Q. Which of the following statements are correct? I. Survival of the fittest is based upon the characteristics that are inherited II. Darwin’s variations are small and directional III. The fitness is the end result of the ability of adults IV. Genetic drift is operated in small population V. Genetic drift operates in large population VI. Genetic drift upset the Hardy-Weinberg equilibrium Choose the correct option
A) I, II, III and IV
B) IV, V, VI and II
C) I, II, III, V and VI
D) I, II, III, IV and VI
Explanation
Genetic drift (Sewall Wright Effect) is the random change in the frequency of alleles in a population over successive generation due to the sampling error in gametes. Each new generation differs from its parental generation with regards to allele frequency simply because of random variation in the distribution of gametes. Overtime, this may lead to certain alleles becoming fixed and other being lost altogether. This process is more rapid in the small population. In large population it is very slow. Genetic drift causes the change in gene frequency
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.