When a methyl group attaches to a specific spot on a gene - a process called DNA methylation.
甲基附加到基因上某个特殊点的过程，称为DNA甲基化。
The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.
工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。
A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms.
甲基是有机化学的基本单位：一个碳原子连接三个氢原子。
In healthy cells a compound called a methyl group is tagged to DNA where it ACTS as a "red light", preventing certain genes from producing proteins.
在正常细胞中，甲基作为DNA标记的一个“红灯”，阻止某些基因合成蛋白质。
Thymine: Organic compound of the pyrimidine family, often called a Base, consisting of a ring containing Both nitrogen and carbon atoms, and a methyl group.
胸腺嘧啶：一种嘧啶类有机化合物，通常叫做基底，由含有氮和碳原子以及甲基的环形物组成。
Darwin taught us that it takes many generations for a genome to evolve, but researchers have found that it takes only the addition of a methyl group to change an epigenome.
达尔文告诉我们基因进化需历经数代，而研究人员发现只有增加一组甲基，就能改变外基因。
Conclusion Introducing the methyl group or a low alkyl group resulting in the high selectivity and increase of its activity.
结论甲基或低级烷基的引入导致了高选择性，使其活性增大。
It may be synthesized directly from ammonia carbon dioxide and a donated methyl group; derived from serine; or derived from glycerate 3-phosphate by transamination of glyoxylate.
甘氨酸来源于丝氨酸，或由乙醛酸经转氨作用生成的甘油3 -磷酸转化而成。
Much is known about the "fifth base, " 5-methylcytosine, which arises when a chemical tag or methyl group is tacked onto a cytosine.
此前，科学家们已对第5种碱基有所了解——当一个化学标签或甲基被固定到一个胞嘧啶上时，第5种碱基就会出现。
Much is known about the "fifth base, " 5-methylcytosine, which arises when a chemical tag or methyl group is tacked onto a cytosine.
此前，科学家们已对第5种碱基有所了解——当一个化学标签或甲基被固定到一个胞嘧啶上时，第5种碱基就会出现。
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