# This Apex Predator Went Extinct. We Should Bring It Back. Source: https://www.youtube.com/watch?v=iX6w1P60m8M Recap page: https://rapidrecap.app/video/iX6w1P60m8M Generated: 2025-10-14T13:02:50.284+00:00 --- ## Quick Overview The video concludes that while de-extinction methods like gene editing offer theoretical possibilities for bringing back extinct species or conferring ancient traits onto living relatives, practical reality is far more complex, as demonstrated by the challenges in reviving the Thylacine and the ethical debates surrounding the creation of near-replicas rather than true extinct animals. **Key Points:** - De-extinction projects, like those aiming to revive the Thylacine, are focusing on 'Genetic Rescue' (gene editing) rather than cloning due to the poor quality of ancient DNA/cells. - The Thylacine's closest living relative is the Fat-tailed Dunnart, sharing 99.9% of its genetic makeup, but the key difference lies in a single letter of genetic code related to toxin resistance. - The Bucardo (Pyrenean Ibex) was successfully cloned in 2003, but the clone died minutes after birth due to lung defects, illustrating the difficulty of bringing back animals even with viable cells. - Gene editing for de-extinction involves taking specific genes (like cold adaptation or thick fur from a mammoth) from ancient DNA and inserting them into a close living relative (like an Asian Elephant). - The speaker suggests that the focus should shift from creating exact replicas to 'Genetic Rescue'—using ancient DNA to increase genetic diversity in critically endangered species like the Black-footed Ferret and Tasmanian Devil, which suffer from small population bottlenecks. - The environmental impact of extinct apex predators, like the Thylacine, highlights the need for careful consideration of ecological roles before reintroducing any genetically altered species. ![Screenshot at 10:08: Andrew Pask explains that 'Genetic Rescue' for endangered species like the Black-footed Ferret, rather than full de-extinction, is a more feasible and ethical application of this technology to combat low genetic diversity.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-10-08.png) **Context:** This video explores the scientific and ethical landscape of de-extinction, a field gaining traction with companies like Colossal Biosciences attempting to revive species such as the Woolly Mammoth, Dire Wolf, and Thylacine. The discussion moves beyond the science fiction concept of cloning to examine modern techniques like gene editing ('Genetic Rescue') and addresses the broader ecological and ethical implications of bringing back extinct animals or engineering traits into living ones. ## Detailed Analysis The video analyzes the feasibility and ethics of de-extinction, contrasting popular media portrayals with scientific reality. It emphasizes that cloning extinct animals is largely impossible due to degraded DNA, citing the Bucardo clone that died shortly after birth in 2003 due to lung defects. For species like the Woolly Mammoth, gene editing (Path 3) is the primary method, involving inserting key mammoth genes (e.g., for thick fur, cold-adapted blood) into a living relative, the Asian Elephant. The speaker argues that the most immediate, practical, and ethically sound application of this technology is 'Genetic Rescue' for critically endangered species suffering from low genetic diversity (bottleneck effect). Examples include increasing the genetic variation in the Black-footed Ferret population and potentially helping the Tasmanian Devil resist disease. The segment critiques the hype surrounding 'de-extinct' animals like the Dire Wolf, noting they are genetically modified grey wolves, not true replicas. The core debate shifts from recreating the exact past to ensuring a healthier future for existing life. ### De-Extinction Methods Compared - Back-Breeding (slow, relies on surviving traits) - Cloning (requires intact living cells, demonstrated by the failed Bucardo clone) - Gene Editing (replacing specific genes in a living relative, like the Mammoth into an Asian Elephant) ### Case Study - Thylacine (Tasmanian Tiger) Extinction: Hunted to extinction by 1936, its closest living relative is the Fat-tailed Dunnart (99.9% genetic similarity), but the key difference is a single letter of DNA code related to resistance to the Tasmanian Devil facial tumor disease. ### Genetic Rescue vs. De-Extinction - Genetic Rescue (using gene editing to increase diversity in endangered species like the Black-footed Ferret) is deemed more realistic and ethical than recreating extinct animals like the Thylacine or Mammoth. ### Ethical/Ecological Stakes - The removal of apex predators like the Thylacine caused an ecological imbalance (Jenga tower collapse), raising questions about the consequences of reintroducing engineered animals into current ecosystems. ![Screenshot at 00:03: Archival footage of the last known Thylacine pacing in an enclosure, highlighting the animal being discussed.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-00-03.png) ![Screenshot at 00:10: Timeline graphic showing the Thylacine's extinction date in 1936 and the subsequent declaration of extinction.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-00-10.png) ![Screenshot at 00:16: Graphic showing the three de-extinction paths: Back-Breeding, Cloning, and Gene Editing, with arrows indicating which path is most viable for the Mammoth.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-00-16.png) ![Screenshot at 01:05: Graphic illustrating the process of cloning by replacing the nucleus of an Asian Elephant egg with Mammoth somatic cell nucleus.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-01-05.png) ![Screenshot at 02:23: Diagram contrasting the Cloning path \(requiring remains\) versus the Gene Editing path for the Woolly Mammoth.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-02-23.png) ![Screenshot at 04:36: Diagram illustrating Gene Editing by comparing Mammoth DNA blocks \(genes\) to Asian Elephant DNA, showing where edits are made.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-04-36.png) ![Screenshot at 08:28: Timeline showing five past mass extinction events and posing the question of whether we are in a sixth one today, caused by humans.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-08-28.png) ![Screenshot at 09:05: Graphic defining 'Genetic Rescue' as introducing beneficial genes into a population, exemplified by the Black-footed Ferret whose low genetic diversity makes it vulnerable.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-09-05.png) ![Screenshot at 11:54: Domino-like analogy showing the ecological collapse in Tasmania after the Thylacine \(apex predator\) was removed from the ecosystem.](https://ss.rapidrecap.app/screens/iX6w1P60m8M/00-11-54.png)