How will genome projects contribute to better productivity in cattle? a) genes from animals with better yields can be complementarily paired with the existing genes of the animal. b) the less vigorous set of genes can be replaced by their more vigorous counterparts in the animal’s genome. c) scientists will be able to introduce genes from different species of animals into cattle to improve fertility. d) scientists will be able to identify superior sets of dna sequences in sperm ensuring better yields of milk and meat.