| 单词 | parthenogenesis |
| 释义 | parthenogenesis (once / 43454 pages) n Use the scientific term parthenogenesis to describe an animal's asexual reproduction — in other words, the process of an embryo growing without being fertilized. It's all the rage today, as scientists discover more and more animals that can reproduce from the female without help from the male. Many plants develop through parthenogenesis, as well as invertebrates, fish, reptiles, and insects. The roots of the word itself are Greek, and mean essentially "maiden borne," from parthenos, "virgin," and genesis, "origin." WORD FAMILYparthenogenesis USAGE EXAMPLESStick insects reproduce by a process called parthenogenesis — without males. New York Times(Feb 15, 2016) A. The development of offspring from unfertilized egg cells is called parthenogenesis. New York Times(Oct 19, 2015) Whether this is long-term storage or parthenogenesis, it’s cool. The Guardian(Sep 17, 2015) 1n process in which an unfertilized egg develops into a new individual; common among insects and some other arthropods Syn|Hypo|Hyper parthenogeny androgenesis, androgeny male parthenogenesis in which the embryo contains only paternal chromosomes due to the failure of the egg nucleus to participate in fertilization gynogenesisfemale parthenogenesis in which the embryo contains only maternal chromosomes due to the failure of the sperm to fuse with the egg nucleus apomixis any of several kinds of reproduction without fertilization 2n human conception without fertilization by a man Syn|Hyper parthenogeny, virgin birth agamogenesis, asexual reproduction reproduction without the fusion of gametes |
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