| 单词 | sex determination |
| 释义 | > as lemmassex determination sex determination n. Biology the biological process by which an individual becomes male or female. ΘΚΠ the world > life > biology > biological processes > genetic activity > [noun] > sex determination sex determination1889 sex control1911 1889 P. Geddes & J. A. Thomson Evol. Sex iii. 49 The temperature of the time, not of birth but of sex determination, must of course be noted. 1909 R. H. Lock Variation, Heredity, & Evol. ix. 277 It is not necessarily to be supposed that the above description of the facts of sex-determination will hold good for every kind of organism. 1936 S. J. Holmes Human Genetics & its Social Import iv. 44 Sex determination would..appear to be settled at the time of fertilization, when the individual receives his or her allotment of chromosomes. 1977 Dædalus Fall 137 Primitive wasps..evolved the sex determination mechanism of haplodiploidy, whereby unfertilized eggs yield males and fertilized eggs yield females. 2005 New Scientist 15 Jan. 42/3 The fact that these insects have evolved sociality perhaps a dozen times owes much to their curious method of sex determination. < as lemmas |
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