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单词 polyphyletism
释义

polyphyletismn.

Brit. /ˌpɒlɪfʌɪˈliːtɪz(ə)m/, U.S. /ˈˌpɑliˌfaɪˈliˌtɪz(ə)m/
Origin: Formed within English, by derivation. Etymons: polyphyletic adj., -ism suffix.
Etymology: < polyphylet- (in polyphyletic adj.) + -ism suffix. Compare earlier polyphylesis n., polyphyly n., and monophyletism n.
= polyphylesis n.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [noun] > descent from independent ancestors
polygeny1865
polygenesis1882
polyphylesis1897
polyphyly1909
polyphyletism1936
1936 Amer. Naturalist 70 521 Closely related to polyphyletism is the principle of parallelism,..that long after the main phyletic lines have separated from their common ancestral stock they may develop identical..new hereditary characteristics.
1969 Biol. Rev. 44 576 The appearance of bifid and trifid lobed forms [of ammonoids]..with the shell sculpture were seen as evidence of polyphyletism.
2002 Amer. Jrnl. Physical Anthropol. 117 334 We provided a way to assess..the impact of factors such as polyphyletism, unbalanced sex-ratio among founders, and age differentials between spouses.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1936
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