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.
剑桥大学科学家 James Watson 和 Francis Crick 在1953年发表了一篇有关DNA双股螺旋结构的文章。这一发现给现如今很多有影响力的和有争议的技术带来了可能性。这些技术包括基因工程，干细胞研究和DNA指纹印记。
DNA (deoxyribonucleic acid) carries the material that makes up genes. Genes pass characteristics from parent to child. Photo: Science Photo Library (SPL)
今日小常识
今日短语
我们用短语 'it is in someone's genes' 来形容某人与其父母的性格或职业选择很相似。
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.
请注意
单词 'genealogy' 的意思是家谱学、宗谱学。
I became interested in genealogy after my mother told me that her grandfather was a pirate.
人气排行
