heterosisn.

/hɛtəˈrəʊsɪs/

Etymology: Late Greek ἑτέρωσις alteration, < ἕτερος different.

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1. Rhetoric. ‘A figure of speech by which one form of a noun, verb, or pronoun, and the like, is used for another’ (Webster, 1864).

2. Zoology. Segmentation in which the parts are different.

ΚΠ

1902 E. R. Lankester in Encycl. Brit. XXV. 691/2 It becomes apparent from this enumeration that there are a good many important elements or ‘meromes’ in an Arthropod metamere or somite which can become the subject of heteromerism or, to use a more apt word, of ‘heterosis’.

1902 E. R. Lankester in Encycl. Brit. XXV. 691/2 The Fourth Law of metamerism (auto~heterosis of the meromes).

3. Genetics. The tendency of cross-breeding to produce an animal or plant with a greater hardiness and capacity for growth than either of the parents; hybrid vigour.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [noun] > cross-breeding or hybridism > hybrid vigour

heterosis1914

hybrid vigour1918

1914 G. H. Shull in Zeitschr. f. induktive Abstammungsund Vererbungslehre XII. 127 I suggest that instead of the phrases, ‘stimulus of heterozygosis’, ‘heterozygotic stimulation’, ‘the stimulating effects of hybridity’, ‘stimulation due to differences in uniting gametes’, etc...the word ‘heterosis’ be adopted. The corresponding adjective ‘heterotic’ may also be useful in such expressions as ‘heterotic effects’.

1938 Nature 3 Dec. 1002/2 The expression of heterosis is much influenced by various external factors.

1959 New Biol. 28 75 Less severe departures from normal growth in hybrids may..involve slower development and poorer growth coordination, or..higher growth rates and seemingly enhanced vigour—the latter the phenomenon of heterosis, or hybrid vigour.

This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2018).

单词	heterosis
释义	heterosisn. /hɛtəˈrəʊsɪs/ Etymology: Late Greek ἑτέρωσις alteration, < ἕτερος different. Categories » 1. Rhetoric. ‘A figure of speech by which one form of a noun, verb, or pronoun, and the like, is used for another’ (Webster, 1864). 2. Zoology. Segmentation in which the parts are different. ΚΠ 1902 E. R. Lankester in Encycl. Brit. XXV. 691/2 It becomes apparent from this enumeration that there are a good many important elements or ‘meromes’ in an Arthropod metamere or somite which can become the subject of heteromerism or, to use a more apt word, of ‘heterosis’. 1902 E. R. Lankester in Encycl. Brit. XXV. 691/2 The Fourth Law of metamerism (auto~heterosis of the meromes). 3. Genetics. The tendency of cross-breeding to produce an animal or plant with a greater hardiness and capacity for growth than either of the parents; hybrid vigour. ΘΚΠ the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [noun] > cross-breeding or hybridism > hybrid vigour heterosis1914 hybrid vigour1918 1914 G. H. Shull in Zeitschr. f. induktive Abstammungsund Vererbungslehre XII. 127 I suggest that instead of the phrases, ‘stimulus of heterozygosis’, ‘heterozygotic stimulation’, ‘the stimulating effects of hybridity’, ‘stimulation due to differences in uniting gametes’, etc...the word ‘heterosis’ be adopted. The corresponding adjective ‘heterotic’ may also be useful in such expressions as ‘heterotic effects’. 1938 Nature 3 Dec. 1002/2 The expression of heterosis is much influenced by various external factors. 1959 New Biol. 28 75 Less severe departures from normal growth in hybrids may..involve slower development and poorer growth coordination, or..higher growth rates and seemingly enhanced vigour—the latter the phenomenon of heterosis, or hybrid vigour. This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2018). < n.1902
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