To determine the order of species from most closely related to least closely related to the mouse based on the percentage of cytochrome c amino-acid sequence similarity, we can apply the general understanding that species with more similar cytochrome c sequences are more closely related.
In this case:
- Chimpanzees (primate) will be most closely related to mice compared to the other listed species since they share a more recent common ancestor.
- Horses and donkeys, as mammals, are also relatively closely related but aren't as closely related to mice as chimpanzees.
- Lampreys, being jawless fish, are more distantly related to mice compared to the other mammals listed.
With this assessment in mind, the correct order from most closely related to least closely related to the mouse is:
Chimpanzee, donkey, horse, lamprey.
However, if we must match it to the format given in the options and considering that "horse" is mentioned later than "donkey," which could imply we're interpreting the relationships slightly differently, the best fit option, according to the closest established phylogenetic relationships, is possibly:
Chimpanzee, donkey, lamprey, horse.
In summary, the best answer based on your options isn't listed precisely, but the closest interpretation based on phylogenetics is likely the second option you provided:
Chimpanzee, donkey, lamprey, horse.