Which one of the following processes results in the production of recombinants in future generations ?
(i) Mutation
(ii) Independent assortment during meiosis I
(iii) Independent assortment during meiosis II
(iv) Crossing over of bivalents
(iv) only
(ii) and (iv)
(i), (ii) and (iii)
(i), (ii), (iii) and (iv)
(ii) and (iv)