Crossword-Solution: AXOLOTLS 8 letters, 3 clues 🏆 scrabble score: 15

Absence of the gametic factor or factors for pigmentation results in albinism, and no amount of exposure to light produces pigmentation in albinos, _e.g._ albino Axolotls which are well known in captivity.

The fact, however, that Axolotls require special treatment to induce metamorphosis seems to show that they have distinctly less congenital tendency to metamorphosis than larvae of the same species, _Amblystoma tigrinum_, in other parts of North America, and this difference must be attributed to the inherited effect of the conditions.

Recently it has been shown that the metamorphosis may be induced by feeding Axolotls on thyroid gland.

Such a supposition would imply that the association between Axolotls and the peculiar Mexican lakes, supplied with oxygenated water by springs at the bottom, was purely accidental.

Professor Semper, on the contrary, declares Bert's axolotls to be albinos, and states that albinism is by no means infrequent in the axolotl; also that Professor Kölliker, of Würtzburg, reared a family of white axolotls in a laboratory where there was an abundance of light, and that he (Semper) never succeeded in rearing an albino, though there was less light in his laboratory than in that of Kölliker, and his axolotls came from the same stock.