ざつがく・どっと・こむ
ちょっと知的な雑学&トリビア

魚も人も、肌の色が変わる仕組みは同じ

2007年12月18日 【雑学なメモ
Share...Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

HHMI News: Same Genetic Machinery Generates Skin Color Evolution in Fish and Humans
When humans began to migrate out of Africa about 100,000 years ago, their skin color gradually changed to adapt to their new environments. And when the last Ice Age ended about 10,000 years ago, marine ancestors of ocean-dwelling stickleback fish experienced dramatic changes in skin coloring as they colonized newly formed lakes and streams. New research shows that despite the vast evolutionary gulf between humans and the three-spined stickleback fish, the two species have adopted a common genetic strategy to acquire the skin pigmentation that would help each species thrive in their new environments.
そういえば、人類はみんな黒い肌だったんだよね、昔は。

Share...Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn



required



required - won't be displayed


Your Comment:

Ape See, Ape Do — Leslie 2007 (1213): 4 — ScienceNOW
Apes can wield tools, learn sign language, and get hooked on TV. New research credits them with yet another ability once thought to be exclusively human: duplicating the facial expressions of others. The work suggests that this capability, which might help individuals synchronize their emotions, […]

前の記事

ET too bored by Earth transmissions to respond – space – 18 December 2007 – New Scientist Space
Humans have so far sent four messages into space intended for alien listeners. But they have largely been made up of mathematically coded descriptions of some physics and chemistry, with some basic biology and descriptions of humans thrown […]

次の記事