Read the following statements and choose the incorrect set of statements.

(I) Increase in the whole set of chromosomes due to the failure of cytokinesis after telophase is called polyploidy.

(II) Colour blindness shows criss-cross inheritance.

(III) Multiple alleles are present on the different locus of homologous chromosome.

(IV) Crossing-over will be more frequent if the distance between two genes is less.

(V) One cross over reduces the frequency of other cross over in its vicinity.

Choose the correct answer from the options given below.