Cambridge University scientists James Watson and Francis Crick published an article describing the double helix structure of DNA in 1953. The discovery opened up some powerful and controversial technologies available today, including genetic engineering, stem cell research and DNA fingerprinting.
劍橋大學(xué)科學(xué)家 James Watson 和 Francis Crick 在1953年發(fā)表了一篇有關(guān)DNA雙股螺旋結(jié)構(gòu)的文章。這一發(fā)現(xiàn)給現(xiàn)如今很多有影響力的和有爭(zhēng)議的技術(shù)帶來(lái)了可能性。這些技術(shù)包括基因工程，干細(xì)胞研究和DNA指紋印記。
DNA (deoxyribonucleic acid) carries the material that makes up genes. Genes pass characteristics from parent to child. Photo: Science Photo Library (SPL)
今日小常識(shí)
今日短語(yǔ)
我們用短語(yǔ) 'it is in someone's genes' 來(lái)形容某人與其父母的性格或職業(yè)選擇很相似。
例句
I love motor racing. The love of speed is in my genes. My father was an ambulance driver.
Ann is very ambitious. She can't help it, it's in her genes. Her parents arrived in this country penniless and now are big industrialists.
請(qǐng)注意
單詞 'genealogy' 的意思是家譜學(xué)、宗譜學(xué)。
I became interested in genealogy after my mother told me that her grandfather was a pirate.
關(guān)注和訂閱
人氣排行
熱搜詞
精華欄目
