Diego the Galapagos Tortoise contributed to his species by being sexually active, being able to father at least 800 tortoises over the past years. 50 years ago, before Diego, there were only 2 males and 12 females on the Galapagos islands. Thus, Diego is now the father of "40% of tortoises in the island of Espanola". Thanks to Diego, he was about to save his species from extinction.

However, not all species or organisms are able to repopulate effectively. Additionally, with one father, there are more chances of mutations. Hence, what if there are other methods that would help the population endangered species be restored again? De-extinction is one method that scientists are currently studying and exploring in order to help resurrect extinct species and maintain & increase the population of endangered species.

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