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Evolution of Whales

Evolution of Whales . Alana and Annasimone. Timeline. Since whales evolved from land mammals, at first their nostrils were positioned far forward. At one point, a mutation occurred, producing at least one whale with “nostrils” positioned further back along the snout. Nostrils. Nostrils.

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Evolution of Whales

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  1. Evolution of Whales Alana and Annasimone

  2. Timeline

  3. Since whales evolved from land mammals, at first their nostrils were positioned far forward.

  4. At one point, a mutation occurred, producing at least one whale with “nostrils” positioned further back along the snout. Nostrils Nostrils

  5. This mutation helped that whale thrive in a sea environment by easing the process of surfacing for air.

  6. The mutated whale survived, thrived and reproduced, passing on this favourable characteristic to its offspring.

  7. This mutation became more common among the population

  8. Modern whales are now born with “nostrils” (blowholes) on their backs

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