What percentage of the nucleotides in the baleen whales DNA are different from those of the mouse?
10% = 4/40
Do killer whales eat baleen whales?
Killer whales eat everything that swims in the water other than human beings and other poisonous fish. Transient orcas hunt dolphins, seals, and whales. In fact, some orcas that live up north towards Alaska have been reported eating deer, catching the deer as the deer cross a strait.
BTW, there has never been the report of orca attacks. None.