Why do some scientists question whether the new pups are true dire wolves?

1. Because they don’t grow as large
2. Because the full dire wolf genome is incomplete
3. Because they have blue eyes
4. Because they were raised by domestic dogs

Some scientists question whether the new pups are true dire wolves because the process involved editing the genes of gray wolves using ancient dire wolf DNA. They argue that these are genetically modified gray wolves with some dire wolf-like traits, not a complete revival of the extinct species which diverged from gray wolves millions of years ago. The limited number of genetic edits may not capture the full complexity of a true dire wolf.