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→核酸碱基
====核酸碱基====
====核酸碱基====
类似的实验（见下文）表明，像鸟嘌呤和腺嘌呤这样的核酸碱基可以从简单的碳和氮源如氰化氢和氨合成。
***讨论：我觉得一方面我们要探寻生命起源前化学反应产生生命所需基本原料的可能，另一方面我们还需要知道这些反应发生的几率和量***
***讨论：我觉得一方面我们要探寻生命起源前化学反应产生生命所需基本原料的可能，另一方面我们还需要知道这些反应发生的几率和量***
2015年3月，美国宇航局科学家报告称，在外太空条件下，利用陨石中发现的嘧啶等起始化学物质，首次在实验室中形成了生命的复杂DNA和RNA有机化合物，包括尿嘧啶、胞嘧啶和胸腺嘧啶。嘧啶和多环芳烃一样，是宇宙中发现的最富含碳的化学物质，可能是在红巨星中或星际尘埃和气体云中形成的。<ref name="NASA-20150303">{{cite web |url=http://www.nasa.gov/content/nasa-ames-reproduces-the-building-blocks-of-life-in-laboratory |title=NASA Ames Reproduces the Building Blocks of Life in Laboratory |editor-last=Marlaire |editor-first=Ruth |date=3 March 2015 |work=Ames Research Center |publisher=NASA |location=Moffett Field, CA |accessdate=2015-03-05 |url-status=live |archiveurl=https://web.archive.org/web/20150305083306/http://www.nasa.gov/content/nasa-ames-reproduces-the-building-blocks-of-life-in-laboratory/ |archivedate=5 March 2015}}</ref>一组捷克科学家报告说，所有四种RNA碱基可能是在如地外撞击等高能密度事件过程中由甲酰胺合成的。<ref>{{cite journal | last1 = Ferus | first1 = Martin | last2 = Nesvorný | first2 = David | last3 = Šponer | first3 = Jiří | last4 = Kubelík | first4 = Petr | last5 = Michalčíková | first5 = Regina | last6 = Shestivská | first6 = Violetta | last7 = Šponer | first7 = Judit E. | last8 = Civiš | first8 = Svatopluk | year = 2015 | title = High-energy chemistry of formamide: A unified mechanism of nucleobase formation | journal = Proc. Natl. Acad. Sci. U.S.A. | volume = 112 | issue = 3| pages = 657–662 | doi = 10.1073/pnas.1412072111 | pmid = 25489115 | bibcode = 2015PNAS..112..657F | pmc = 4311869 }}</ref>
2015年3月，美国宇航局科学家报告称，在外太空条件下，利用陨石中发现的嘧啶等起始化学物质，首次在实验室中形成了生命的复杂DNA和RNA有机化合物，包括尿嘧啶、胞嘧啶和胸腺嘧啶。嘧啶和多环芳烃一样，是宇宙中发现的最富含碳的化学物质，可能是在红巨星中或星际尘埃和气体云中形成的。<ref name="NASA-20150303">{{cite web |url=http://www.nasa.gov/content/nasa-ames-reproduces-the-building-blocks-of-life-in-laboratory |title=NASA Ames Reproduces the Building Blocks of Life in Laboratory |editor-last=Marlaire |editor-first=Ruth |date=3 March 2015 |work=Ames Research Center |publisher=NASA |location=Moffett Field, CA |accessdate=2015-03-05 |url-status=live |archiveurl=https://web.archive.org/web/20150305083306/http://www.nasa.gov/content/nasa-ames-reproduces-the-building-blocks-of-life-in-laboratory/ |archivedate=5 March 2015}}</ref>一组捷克科学家报告说，所有四种RNA碱基可能是在如地外撞击等高能密度事件过程中由甲酰胺合成的。<ref>{{cite journal | last1 = Ferus | first1 = Martin | last2 = Nesvorný | first2 = David | last3 = Šponer | first3 = Jiří | last4 = Kubelík | first4 = Petr | last5 = Michalčíková | first5 = Regina | last6 = Shestivská | first6 = Violetta | last7 = Šponer | first7 = Judit E. | last8 = Civiš | first8 = Svatopluk | year = 2015 | title = High-energy chemistry of formamide: A unified mechanism of nucleobase formation | journal = Proc. Natl. Acad. Sci. U.S.A. | volume = 112 | issue = 3| pages = 657–662 | doi = 10.1073/pnas.1412072111 | pmid = 25489115 | bibcode = 2015PNAS..112..657F | pmc = 4311869 }}</ref>
====使用高温====
====使用高温====