hexaploid, a. and n. Biol.
(ˈhɛksəplɔɪd)
[f. hexa- + -ploid.]
A. adj. (Made up of somatic cells) containing six sets of chromosomes. B. n. A hexaploid organism.
| 1920 G. Täckholm in Svensk Bot. Tidskr. XIV. 302 The diploid and tetraploid forms [of roses] of the types 1 and 2 are represented in about equal frequence in my material, the hexaploid (type 3) being rarely met with. 1921 Ann. Bot. XXXV. 185 The remainder of the tetraploids, the whole of the pentaploids and hexaploids, showed a partial reduction involving fourteen or twenty-eight chromosomes. 1952 New Biol. XIII. 32 The common bread-wheats which have 42 chromosomes, or 6 sets, are hexaploids. 1956 Nature 25 Feb. 384/2 Hexaploid cells in mouse blastocysts. 1970 Watsonia VIII. 130 Two other differences between the rhizome scales of the diploid and hexaploid were noticed. |
Hence ˈhexaploidy, the state or condition of being hexaploid.
| 1922 Genetics VII. 540 There is evidence that does not support the view that tetraploidy and hexaploidy in wheat is actually due to chromosomal duplication. 1925 Jrnl. Genetics XV. 263 Tetraploidy and hexaploidy may play a part in the striking changes of the chromosome group from species to species. |