Given below are two statements: Statement I : During the pachytene stage, crossing over occurs between the sister chromatids of homologous chromosomes. Statement II : Diakinesis is the final stage of meiotic prophase I and is marked by the terminalisation of chiasmata. In the light of the above statements, choose the correct answer from the options given below:

Step-by-step solution

Statement I is incorrect because during the pachytene stage of meiosis I, crossing over occurs between non-sister chromatids of homologous chromosomes, not sister chromatids. Statement II is correct as diakinesis is the final stage of meiotic prophase I, which is characterized by the terminalisation of chiasmata, condensation of chromosomes, and the breakdown of the nuclear envelope. Answer: Statement I is incorrect but Statement II is correct