单词 | haplodiploid |
释义 | haplodiploidadj. Biology. Having both haploid and diploid aspects or components; esp. designating, relating to, or possessing a system of reproduction (as in hymenopteran insects) in which females are diploid, developing from fertilized eggs, and males are haploid, developing from unfertilized eggs. ΚΠ 1932 Biol. Bull. 63 306 It is highly probable that the haplo-diploid male mosaics have been missed on account of failure of obvious mosaicism, being classified either as normal haplonts or as biparental males. 1964 Hereditas 52 121 Among 25 plants growing in the greenhouse, we found two to be haplo-diploid chimaeras. 1989 Jrnl. Heredity 80 39/2 As a consequence of the haplodiploid genetic system (equivalent to X-linked inheritance) of the Hymenoptera, the expected mean within-family genotypic variance of (haploid) males is four times greater than that of their (diploid) sisters. 2011 R. McGhee & R. McGhee Convergent Evol. vi. 230 Of the 17 evolutionary lineages that have convergently evolved eusocial behavior.., over half are haplodiploid. Derivatives haploˈdiploidy n. the state or condition of being haplodiploid. ΚΠ 1944 Biol. Bull. 87 174 Its loss, and the substitution of alternative mechanisms—(haplo-diploidy in the Iceryini and the as yet unsolved sex determining mechanisms of Pseudococcus..and Lecanium)..have occurred in all other forms thus far investigated. 1977 Dædalus Fall 137 Primitive wasps..evolved the sex determination mechanism of haplodiploidy. 2002 Nature 25 Apr. 782/3 Haplodiploidy creates some bizarre family dynamics... A mother's relatedness to her son is 0.5, but consider the same relationship from his perspective and r rises to 1.0. This entry has been updated (OED Third Edition, December 2013; most recently modified version published online March 2022). < adj.1932 |
随便看 |
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。