| 单词 | maternal effect |
| 释义 | > as lemmasmaternal effect maternal effect n. Genetics the determination of particular phenotypic properties of the immediate offspring by the genotype or phenotype of the female parent; an instance of this; spec. such an effect mediated by the presence of maternal gene products (proteins or messenger RNA) in the cytoplasm of the ovum. ΚΠ 1935 T. Dobzhansky in Proc. National Acad. Sci. U.S.A. 21 446 We are dealing either with a real cytoplasmic effect (determination by intrinsic properties of the cytoplasm..), or with a maternal effect (determination of the properties of the cytoplasm by those of the chromosomes it carried before fertilization. 1954 Jrnl. Genetics 52 413 Most of the non-genetic variation is due to intangible factors acting independently on individuals, but..there is some evidence for maternal effects. 1990 EMBO Jrnl. 9 2977/1 The specification of anterior positional information during Drosophila embryogenesis is largely dependent upon the function of the maternal-effect gene bicoid. < as lemmas |
| 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。