polytenizationn.

Brit.

/ˌpɒlᵻtiːnʌɪˈzeɪʃn/, U.S.

/ˈˌpɑlitiˌnaɪˈzeɪʃ(ə)n/,

/ˈˌpɑliˌtinəˈzeɪʃ(ə)n/

Forms: see polytene adj. and -ization suffix

Origin: Formed within English, by derivation. Etymons: polytene adj., -ization suffix.

Etymology: < polytene adj. + -ization suffix. Compare later polytenize v.

Cell Biology.

The reduplication of genetic material resulting in a polytene chromosome.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome > causing

polytenization1966

1966 Proc. Royal Soc. B. 164 280 After many steps of polytenization (12 or 14 consecutive replications) such a labelled chromosome thread may still extend as a single linear unit from the one end of the giant chromosome to the other end.

1976 Nature 17 June 614/2 Ciliata and Diptera..show a high tendency for endopolyploidisation and polytenisation.

1995 E. Jablonka & M. J. Lamb Epigenetic Inheritance & Evol. viii. 226 Segments of heterochromatin are eliminated during polytenization in Drosophila.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polytenization
释义	polytenizationn. Brit. /ˌpɒlᵻtiːnʌɪˈzeɪʃn/, U.S. /ˈˌpɑlitiˌnaɪˈzeɪʃ(ə)n/, /ˈˌpɑliˌtinəˈzeɪʃ(ə)n/ Forms: see polytene adj. and -ization suffix Origin: Formed within English, by derivation. Etymons: polytene adj., -ization suffix. Etymology: < polytene adj. + -ization suffix. Compare later polytenize v. Cell Biology. The reduplication of genetic material resulting in a polytene chromosome. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome > causing polytenization1966 1966 Proc. Royal Soc. B. 164 280 After many steps of polytenization (12 or 14 consecutive replications) such a labelled chromosome thread may still extend as a single linear unit from the one end of the giant chromosome to the other end. 1976 Nature 17 June 614/2 Ciliata and Diptera..show a high tendency for endopolyploidisation and polytenisation. 1995 E. Jablonka & M. J. Lamb Epigenetic Inheritance & Evol. viii. 226 Segments of heterochromatin are eliminated during polytenization in Drosophila. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1966
随便看	subtrader subtrahend subtrahends subtranslucent subtransmission subtransparency subtransparent subtransverse subtransversely subtrapezial subtray subtreasurer subtreasurers subtreasurership subtreasuries subtreasury subtreasury office subtree subtrench subtriangular subtriangulate subtriangulato subtriangulato- subtribal subtribe