名词单性生殖,孤雌生殖
1. 孤雌生殖:孤雌生殖(parthenogenesis)有些动物的生殖不需雄体参加,只是雌体产生卵. 此卵不与精子结合,即可发育成新的个体,实际上这是单性生殖. 其卵发育成的子代一般均为雌性个体. 少数动物至今只有雌性个体,尚未发现雄性个体的存在,一生中只进行孤雌生殖,
2. 单性生殖:对於其他的爬虫类而言,单性生殖(parthenogenesis)是可能的事,但是对於属处女的科摩多龙来说,早在去年四月伦敦动物园即已有纪录. 这种将科摩多龙从自然环境捕捉到动物园来的圈养繁殖(captive breeding)有望全球最大的蜥蝪得以生存下来,
3. 单性生殖, 孤雌生殖:parthenocarpy 单性结实 | parthenogenesis 单性生殖;孤雌生殖 | partial dominance 部分显性
4. 无精生殖:parthenocarpy 单性结实 | parthenogenesis 无精生殖 | parthenogenetic development 孤雌发育
1. Parthenogenesis - where eggs become embryos without male fertilization - had only been noted once before in a Komodo dragon.
2. Parthenogenesis is a process in which eggs become embryos without male fertilization.
3. Parthenogenesis is not known to lead to the development of a fetus in mammals.
4. The scientists said their findings offer " intriguing questions " about how frequently automictic parthenogenesis occurs in the wild.
noun
1. process in which an unfertilized egg develops into a new individual
common among insects and some other arthropods
Synonym: parthenogeny
2. human conception without fertilization by a man
Synonym: parthenogeny virgin birth