Question

Which statement best explains the evolutionary advantage of meiosis?

• A. meiosis is necessary for sexual reproduction
• B. genetic recombinations are possible from generation to generation
• C. meiosis alternates with mitosis from generation to generation
• D. the same genetic system is passed on from generation to generation.

Answer 1

Answer: (B)

Meiosis involves exchange of genes between homologous chromosomes. So the gametes produced are genetically different from each other. Offsprings produced by the fusion of gametes therefore also show recombinations or genetic variations. These variations in the offsprings make organisms more adaptable to the environment and these have a definite role in evolution.