[新聞] 猴子天生就比較會爬樹
作者 bg00004 (絕緣體) 看板 Gossiping
標題 [新聞] 猴子天生構造就比人會爬樹
時間 Wed Apr 15 13:47:28 2009
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美國研究人員說,人類因為爬樹的技術不好,沒辦法繼續當猴子,只好待在地上,
成了人。
一般相信,人類跟猴子原來是一家子。大約在四到八百萬年前,分道揚鑣,
有些繼續當猴子,有些演化成了人。美國密西根大學的戴席瓦博士說,他研究過四百萬年
前的人猿化石以後發現,這批人類的祖先腳踝關節構造跟黑猩猩有了很大的分別。
人猿腳掌往上只能形成十五到二十五度的夾角,不利爬樹。黑猩猩的腳掌卻可往上達四十
五度,爬起樹來就跟猴子一樣敏捷。
戴席瓦說,為了讓腳掌能夠大角度往上,黑猩猩小腿的骨頭,也跟著演化到了能讓腳踝和
腿骨連接的角度。戴席瓦說,從腳踝和腿骨的構造來看,人類一開始就沒有猴子會爬樹。
http://tw.news.yahoo.com/article/url/d/a/090414/1/1htjq.html
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Chen's plight proves how lots of times in real life, politicians are exactly
what they claim not to be.
-- exerpted from The China Post EDITORIAL Aug. 17
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