评论
打印
Could these be dire wolf cubs, a species that has been extinct for more than 10,000 years?
这些会是恐狼--一个已经灭绝了一万多年的物种--的幼崽吗？
US biotechnology company Colossal Biosciences says it has produced three dire wolves, though some experts are skeptical.
美国生物技术公司Colossal Biosciences宣称，他们已经培育出了三只恐狼，尽管一些专家对此持怀疑态度。
Colossal released footage said to show dire wolf adolescent cubs, Romulus and Remus, produced by modifying the genome of a modern greywolf using dire wolf DNA found in fossils.
据称，Colossal公司发布了一段视频，展示了恐狼幼崽罗慕路斯和雷穆斯，它们是通过利用化石中发现的恐狼DNA，对现代灰狼基因组进行编辑后培育出来的。
Cory Bradshaw, professor of global ecology at Australia's Flinders University, suggested that what Colossal says it has done is impossible due to factors like DNA degradation.
澳大利亚弗林德斯大学全球生态学教授科里·布拉德肖表示，由于DNA降解等因素，Colossal所说的情况是不太可能实现的。
"Yes, they have slightly genetically modified wolves, maybe. And that's probably the best that you're going to get. And those slight modifications seem to have been derived from retrieved dire wolf material.
“是的，他们或许对灰狼进行了轻微基因改造。这可能是你能做到的极限了。这些细微的修改似乎源自提取的恐狼遗传物质。
Does that make it a dire wolf? No. Does it make a slightly modified gray wolf? Yes. And that's probably about it."
这样就能称为恐狼吗？不能。算是改良版灰狼吗？是的。以现有技术，这大概就是极限了。”
According to Colossal, their team extracted DNA from fossils including a 13,000-year-old dire wolf tooth and a 72,000-year-old inner ear bone.
Colossal公司称，他们的团队是从化石中提取了DNA，其中包括一颗1.3万年前的恐狼牙和一块7.2万年前的恐狼内耳骨。
A female puppy Khaleesi was also successfully birthed, they added.
他们还补充道，一只雌性恐狼幼崽卡丽熙也成功出生了。
Colossal Biosciences says it is the first biotechnology company to use something called "CRISPR" gene-editing to research species deextinction.
Colossal Biosciences公司表示，他们是第一家使用“CRISPR”基因编辑技术研究物种灭绝的生物技术公司。
It also says it has recently cloned critically endangered red wolves.
此外，该公司还声称他们最近克隆出了极度濒危的红狼。
