| 单词 | apomixis |
| 释义 | apomixis (extremely rare) n WORD FAMILY apomixis USAGE EXAMPLESSometimes apomixis is used only as a backup. Washington Post(May 20, 2013) Apomixis has evolutionary advantages: Asexual seeds essentially yield immaculate clones of the parent, passing on the parent’s beneficial traits without interruption. Washington Post(May 20, 2013) One problem with apomixis, however, is that plants grown from the asexual seed have diminished fertility. Washington Post(May 20, 2013) n any of several kinds of reproduction without fertilization Hypo|Hyper apogamy (botany) development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization parthenocarpy(botany) the development of a fruit without fertilization or seeds parthenogenesis, parthenogenyprocess in which an unfertilized egg develops into a new individual; common among insects and some other arthropods androgenesis, androgenymale 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 agamogenesis, asexual reproduction reproduction without the fusion of gametes |
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