每日背誦第四期5
Race has always had a huge impact on history, society, and culture. But according to many scientists, the concept of race has no biological basis; it is merely a social construct. The American Anthropological Association has stated that race simply cannot be tested or proven scientifically. Because humans have been around for a relatively short time by evolutionary standards, scientists say that there is not enough genetic diversity in humans to allow us to be divided into neat, racial cubbyholes or subspecies. It is generally believed that humans originated in Africa about two hundred thousand years ago and migrated to other continents one hundred thousand years later. Although environmental variations have produced the physical differences in hair and skin we see today, underneath the surface there has been little change.
種族問題一直對歷史、社會和文化有巨大影響。但是根據(jù)許多科學家的觀點，種族概念沒有生物學上的立論根據(jù)，純粹僅是社會建構出來的產(chǎn)物。美國人類學協(xié)會指出，種族基本上無法用科學方法加以測試及驗證。因為就進化的標準來說，人類的存在相對較短，因此科學家認為，人類的基因不夠的多樣化，還不足以劃為純粹的種族分支或亞種。一般認為，人類在二十萬年前源于非洲，十萬年后陸續(xù)遷徙到其它大陸。雖然各地的環(huán)境差異使人們在外觀如膚色、發(fā)色上大相逕庭，但是骨子里不同之處極少。
(短文節(jié)選,本篇始于：性命“憂”關 )
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