點(diǎn)擊科學(xué)
2023-03-31
一項(xiàng)新的分析表明,“大平原”部落獲得馬匹的時(shí)間比一些歷史學(xué)家認(rèn)為的要早得多,這與土著居民將馬描述為長(zhǎng)期與持久的伙伴關(guān)系保持一致。封面圖上的這幅巖畫來自美國(guó)懷俄明州南部的托拉爾遺址,推測(cè)可能繪制于17 世紀(jì)早期——現(xiàn)代馬在北美廣泛分布后不久的時(shí)候。
A n e w a n a l y s i s s h o w sthat Great Plains tribes acquiredh o r s e s m u c h e a r l i e r t h a nsome historians had thought,c o n s i s t e n t w i t h I n d i g e n o u sd e s c r i p t i o n s o f a l o n g a n denduring partnership with thehorse. This petroglyph, fromt h e T o l a r s i t e i n s o u t h e r nWyoming, probably dates fromsoon after the modern horsebecame widespread in NorthA m e r i c a i n t h e e a r l y 1 7 t hcentury.
2023-04-07
封面圖展示的是一個(gè)跨膜G 蛋白偶聯(lián)受體GPR120, 它與一個(gè)Omega-3 脂肪酸配體二十碳五烯酸結(jié)合,以亮橙色表示。(剩余1571字)