autotetraploid Biol.
(ˌɔːtəʊˈtɛtrəplɔɪd)
[f. auto-1 + tetraploid.]
A tetraploid having four sets of chromosomes produced by doubling the chromosome number of a single diploid species. Hence ˌautoˈtetraploidy, the condition or occurrence of such a tetraploid.
| 1930 J. B. S. Haldane in Jrnl. Genetics XXII. 363 The self-sterile Dahlia variabilis behaves in some respects at least as an autotetraploid. 1942 J. S. Huxley Evolution iii. 87 The normal diploid complement of chromosomes of a species may become doubled (autotetraploidy). 1949 Darlington & Mather Elem. Genetics vi. 135 The allotetraploid stands at one extreme; the autotetraploid, the product of doubling a homozygous diploid such as a tomato, stands at the other. |