| 单词 |
parthenote |
| 释义 |
parthenote, n. Biol.
Brit. |ˈpɑːθɪnəʊt|, |ˈpɑːθnˌəʊt|, U.S. |ˈpɑrθəˌnoʊt|
[Probably ‹partheno- comb. form + -ote (in zygote n.).]
An organism produced from an unfertilized egg by parthenogenesis, esp. one which (as in mammals) is not naturally capable of developing beyond the early embryonic stages.
1931Amer. Naturalist 65 165 F2 parthenotes should then for the majority of their genes be homozygous segregates, but to a less extent for other characters they should be heterozygous. 1971Ecology 52 778 Among lizards,Lacerta..and Cnemidophorus..contain unisexuals which are parthenotes reproductively free from their parental progenitors. 1991M. E. Pembrey in M. Rutter & P. Casaer Biol. Risk Factors for Psychosocial Disorders iv. 74 Diploid parthenotes possessing two maternal genomes are usually inviable. 2001Science 30 Nov. 1802/3 Because a parthenogenetically activated egg could never produce a full-term baby, some have speculated that stem cells derived from ‘parthenotes’ might skirt the ethical questions that surround the use of human embryos. |
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