while this is occurring an unfertilized egg cell is taken from a blackface ewe with its dna filled nucleus taken out leaving a nucleus free egg cell that will later produce an embryo (3).
(接着如果把它)放在一个细胞核已去除的黑面母羊的的营养细胞中,它一会儿就会产生一个胚芽。
daley of the children's hospital of boston, uses a procedure known as parthenogenesis in which a series of chemical treatments are used to encourage an unfertilized egg to begin embryonic development.
daley 博士领导了这项新的研究利用一系列的化学方法来处理单性细胞,从而促使未受精卵进行胚胎发育。
a form of reproduction in which an unfertilized egg develops into a new individual, occurring commonly among insects and certain other arthropods.
单性生殖,孤雌生殖一种配子未经受精就能发育成新个体的生殖方式,常用于昆虫和某些其它类节。
the ultrastructure of the eggshell of fertilized egg and unfertilized egg of alligator sinensis was studied by scanning electron microscopy.
为比较扬子鳄受精卵及未受精卵卵壳,用扫描电镜观察其超微结构。