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基因是什么?遗传学家最先回答的是:基因是表现某一遗传性状的物质基础。如不同的人种之间头发、肤色、眼晴、鼻子等的不同,是基因差异所致;生物界“种豆得豆,种瓜得瓜”也是由基因决定的。基因是DNA大分子的一个片段,由四种特定核苷酸按一定顺序串联而成,基因的功能由其结构(核苷酸顺序)和表达调控所决定,二者一旦发生异常的改变,就会导致疾病的发生以及各种不正常的病理现象的出现。人体衰老、患病,实质是基因受损导致人体器官的细胞老化和损伤。基因受
What is a gene? The first answer a geneticist has is that a gene is the material basis for a given genetic trait. Such as different ethnic hair, skin color, eyes, nose and so different, is caused by genetic differences; biological world, “beans grow beans, grow melon” is also genetically determined. Gene is a fragment of DNA macromolecules formed by a series of four specific nucleotides in a certain order. The function of a gene is determined by its structure (nucleotide sequence) and expression regulation. Once the two have changed abnormally, Will lead to the occurrence of the disease as well as a variety of abnormal pathological appearance. Human aging, illness, in essence, gene damage lead to human aging and cell damage. Gene receptor