Nyob rau hauv zib mu, cov drones (txiv neej) yog tag nrho los ntawm tus poj huab tais, lawv niam. Poj huab tais diploid muaj 32 chromosomes thiab haploid drones muaj 16 chromosomes. Drones tsim cov phev hlwb uas muaj tag nrho lawv cov genome, yog li cov phev yog txhua yam genetic tib yam nkaus xwb rau kev hloov pauv.
txiv neej bees tsim gametes li cas?
Nyob rau hauv cov muv, cov fertile poj huab tais muv yog fertilized los ntawm txiv neej gametes los ntawm ib tug txiv neej muv hu ua drone. … Yog li cov phev ntawm lub drone yuav tsum tau tsim los ntawm ib txwm cell division (mitosis) es tsis txhob ntawm meiotic cell division uas feem ntau yog koom nrog tsim ntawm fertile gametes.
Hom kev faib cell twg tsim gametes hauv txiv neej muv?
Ib qho piv txwv ntawm kev faib cell hauv cov hlwb haploid yog txiv neej honeybee (drone muv) uas tsim los ntawm lub qe haploid unfertilized. Meiosis yog ib hom kev faib cell tshwj xeeb uas tus lej chromosome raug txo qis hauv ib nrab. Qhov no yog li cas tus lej chromosome hauv lub neej voj voog hloov ntawm diploid (2n) mus rau haploid (n).
Pob txiv neej bees tsim gametes los ntawm meiosis?
Txiv neej ntawm kab hymenopteran, uas suav nrog ntsaum, muv thiab waps, tsim ua haploids los ntawm cov qe tsis muaj menyuam. Txhawm rau kom haum rau lawv qhov tsis muaj homologous chromosome khub, qee cov hymenopterans xws li honeybee tau pom tias tsim haploid phev los ntawm kev rho menyuam meiosis.
Gametes ntawm txiv neej tsim nyob qhov twg?
Ob lub noob qes (los yog cov noob qes) tsim cov phev thiab txiv neej cov tshuaj hormone testosterone.
