environ. |
cloning The production of genetically identical individuals from a single parent. Cloning plants usually involves plant cell culture. Cloning animals is more difficult and relays on some manipulation of their normal reproductive cycle. A clone is a group of organisms of identical genetic constitution, unless mutation occurs, produced from a single individual by asexual reproduction, parthenogenesis or apomixis (从一个单一母本产生相同基因个体的过程。克隆植物通常涉及植物细胞培养。克隆动物更加困难的,并依赖于它们正常循环再生的某些操作。一个克隆体是具有相同基因构成的有机体的组合,除非发生突变。克隆体是从个体通过无性生殖或单性生殖得到的。) |