$$ \text { Match List I with List II : } $$

Choose the correct answer from the options given below :

What is the main function of the spindle fibers during mitosis?

Given below are two statements:

Statement I: Failure of segregation of chromatids during cell cycle resulting in the gain or loss of whole set of chromosome in an organism is known as aneuploidy.

Statement II: Failure of cytokinesis after anaphase stage of cell division results in the gain or loss of a chromosome is called polyploidy.

In the light of the above statements, choose the correct answer from the options given below:

Recombination between homologous chromosomes is completed by the end of