| major histocompatibility complex | 主要组织兼容性抗原复全体 | 82 |
| malformation, congenital | 先天畸形 | 8 |
| malignant melanoma | 恶性黑色素瘤 | 118 |
| maple syrup urine disease | 枫糖尿病 | 80 |
| mapping | 制图 | 109 |
| marker chromosome | 标记染色体 | 121 |
| materal inheritance | 母系染色体 | 58 |
| medical geneics | 医学遗传学 | 1 |
| melanosome | 黑素小体 | 77 |
| membrane diseases | 膜蛋白病 | 69 |
| skeleton | 膜骨架 | 70 |
| mental retardation | 智力低下,智能发育不全 | 22,151 |
| metabolic inhibitor | 代谢抑制剂 | 143 |
| metabolic suppressor gene | 肿瘤转移抑制基因 | |
| gene | 肿瘤转移基因 | 3,116 |
| micro cell | 微细胞 | 105 |
| micodessection | 显微切割 | 2 |
| micrognathia | 小颌 | 25 |
| microinjection | 显微注射 | 168 |
| migration pressure | 迁移压力 | 102 |
| migration | 迁移 | 102 |
| minidystrophin | 小肌营养不良蛋白 | 170,172 |
| minor gene | 微效基因 | 83 |
| mis-paires synapsis | 错配联会 | 46 |
| mitochondrial DNA | 线粒体DNA | 42,58 |
| model number | 众数 | 121 |
| moderative repetitive sequence | 中度重复顺序 | 41 |
| molecular genetics | 分子遗传学 | 1 |
| cloning | 分子克隆 | 155 |
| disease | 分子病 | 2,59 |
| monogenic disease | 单基因病 | 4,48 |
| monogenic form of multifatorial disease | 多因子病的单基因型 | 88 |
| monosomy | 单体性 | 13 |
| monozygotic twin | 单卵双生,同卵双生 | 5 |
| mosaic | 嵌合体,同源嵌合体 | 14 |
| multidisease screening technique | 多病性筛查技术 | 141 |
| multifactorial inheritance | 多因子遗传 | 83 |
| multiple alleles | 复等位基因 | 50 |
| mulitiple loci determining isozyme | 多座位同工酶 | 81 |
| murine leukemia virus | 鼠白血病病毒 | 169 |
| mutagen | 诱变剂 | 43,138 |
| mutagenesis | 诱变,致(突)变 | 1 |
| mutant | 突变本 | 43 |
| mutation | 突变 | 43 |
| mutation load | 突变负荷 | 696 |
| rate | 突变率 | 93 |
| neutral | 中性突变 | 45 |
| presure | 突变压力 | 94 |
| codon | 整码突变 | 45 |
| elongation | 延长突变 | 43 |
| forward | 正向突变 | 93 |
| frame-shift | 移码突变 | 45 |
| gene | 基因突变 | 43 |
| hot spot of | 突变热点 | 43 |
| induced | 诱发突变 | 43 |
| mis-sens | 错义突变 | 44 |
| neutral | 中性突变 | 45,93 |
| non-sense | 无义突变 | 45 |
| point | 点突变 | 43 |
| reverse | 回复突变 | 93 |
| same sence | 同义突变 | 44 |
| spontaneous | 自然突变,自发突变 | 43 |
| suppressor gene | 抑制基因突变 | 45 |
| synonymous | 同义突变 | 44 |
| termination codon | 终止密码突变 | 45 |