Turning frozen skin into sperm and egg cells could bring back northern white rhinos? But who will carry the embryo?
Angalifu, male Northern White Rhinoceros at San Diego Wild Animal Park. Angalifu died from old age on December 14, 2014.Scientists say they have sufficient genetic material to recover the northern white rhino. But that does not mean it will be an easy process.
Just two northern white rhinos remain on the planet. Both of them are female, named Najin and her daughter Fatu. The last male, Sudan, died in 2018. Researchers at the San Diego Zoo Wildlife Alliance in California examined skin cells extracted from 12 distinct northern white rhinos preserved in their Frozen Zoo. Using a computer model, they simulated the outcome of utilizing the genetic material from these rhinos to produce sperm and egg cells.
The research discovered that this approach could work, offering hope to bring back other white rhinos. But over multiple generations. According to their simulations, the northern white rhinos were not inbred after 10 generations. Inbreeding occurs when individuals within a population mate with close relatives, lowering genetic diversity. In this case, the results showed that the mating pairs in each generation were genetically diverse. This mimics natural reproductive patterns that prevent inbreeding in a healthy population.
“There is so much more to conserving rhinos than genetic diversity in cell lines,” Terri Roth, Adjunct Professor at the Center for Conservation and Research of Endangered Wildlife at Cincinnati Zoo and Botanical Garden, added. “But good news on any front is still worth celebrating in these tough times.”An “unapproved lubricant” forces Elon Musk to recall all Cybertrucks
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