Triploids feem ntau yog autopolyploids. Lawv tshwm sim nyob rau hauv qhov xwm txheej los yog tsim los ntawm geneticists los ntawm crossof a 4x (tetraploid) thiab 2x (diploid). Lub 2x thiab x gametes sib sau ua ib lub 3x triploid. Triploids yog tus yam ntxwv tsis muaj menyuam.
Puas yog tetraploid sterile?
Autopolyploidy tshwm sim los ntawm kev ua tsis tiav ntawm chromosomes cais thaum lub sijhawm meiosis. … Cov xeeb leej xeeb ntxwv uas ua tau li no yog ib txwm muaj menyuam tsis tausvim tias lawv muaj tus lej chromosomes tsis sib xws uas yuav tsis sib raug zoo thaum lub sijhawm meiosis. Thaum ob ntawm cov gametes (2n) ua ke, cov xeeb ntxwv tshwm sim yog tetraploid (4n).
Cov nroj tsuag tetraploid puas tuaj yeem tsim tau?
Vim tetraploid nroj tsuag tsis tuaj yeem tsim dua nrog diploid cov nroj tsuag thiab tsuas yog sib koom ib hom tshiab yuav tau tsim tom qab ib tiam xwb.
Puas triploid kab mob fertile?
Lub ntuj triploid yog 80 feem pua fertile, thiab morphologically zoo ib yam li A. shortii. Qhov kev npaj txhij txog siab fertility ntawm triploid hybrids tuaj yeem yog vim ib qho, lossis qee qhov sib xyaw ua ke, ntawm ntau yam.
Vim li cas Allopolyploids feem ntau tsis muaj menyuam?
allopolyploid Ib hom kab mob polyploid, feem ntau yog cov nroj tsuag, uas muaj ntau pawg chromosomes muab los ntawm ntau hom. Hybrids feem ntau yog tsis muaj menyuam, vim lawv tsis muaj cov chromosomes homologous thiab yog li kev ua khub tsis tuaj yeem tshwm sim.
