Separation of a pronucleus by premature cytokinesis: a mechanism for immediate diploidization
of tripronuclear oocytes?
11%, respectively but plants showed 100% sterility with sectoral diploidization
In practice however, WGDs are often followed by loss of some or all of the duplicated genes, or even chromosomes, in a process referred to as diploidization
(see Wolfe, 2001).
The origin of such high chromosome number was a matter of debate and two hypotheses were proposed, as it was said before: one suggesting that homosporous ferns are true polyploids, resulting from repeated cycles of polyploidy, followed by a process of diploidization
with a massive gene silencing; while the other, suggested that they are true diploids having achieved high chromosome numbers via other mechanisms (Barrington et al.
The viable resultant gynogens from hybridization may be the result of male chromosome elimination and spontaneous diploidization
of the maternal chromosome set (SDM) (Ye et al.
Allopolyploid evolution coupled with diploidization
may also facilitate the formation of new species capable of utilizing unique niches via plasticity and subsequent niche specialization.
On the diploidization
mechanism of the genus Aegilops: Meiotic behaviour of interspecific hybrids.
Soltis & Rieseberg, 1986), and it has frequently been proposed that genetic diploidization
of polyploids is a more or less universal phenomenon (e.
Even though diploidization
of the male line (see introduction) circumvents the problems of meiosis in triploid cells, the process of ploidy reduction itself might have a high error rate.
Oryzalin induces chromosome doubling through depolymerization of microtubules and results in diploidization
of the maternal chromosome set was shown to occur in hybrid larvae, as 2.
Yesterday's polyploids and the mistery of diploidization