Ib tug bivalent yog ib khub ntawm chromosomes hauv tetrad. Lub tetrad yog lub koom haum ntawm ib khub ntawm homologous chromosomes lub cev tuav ua ke los ntawm tsawg kawg ib qho DNA crossover. Qhov kev sib txuas ntawm lub cev no tso cai rau kev sib haum xeeb thiab kev sib cais ntawm homologous chromosomes hauv thawj qhov kev faib meiotic.
Koj txhais li cas los ntawm bivalent chromosome?
Ib tug bivalent yog ib khub chromosomes (viv ncaus chromatids) hauv tetrad. Ib tug tetrad yog kev koom tes ntawm ib khub ntawm homologous chromosomes (4 tus muam chromatids) lub cev tuav ua ke los ntawm tsawg kawg ib DNA crossover.
Dab tsi yog bivalents hauv noob caj noob ces?
Thaum lub sijhawm prophase ntawm meiosis kuv, homologous chromosomes khub thiab tsim synapses. Cov chromosomes ua ke yog hu ua bivalents. Cov bivalent muaj ob chromosomes thiab plaub chromatids, nrog ib chromosome los ntawm txhua tus niam txiv.
Puas muaj pes tsawg chromosomes nyob rau hauv bivalent?
Nco ntsoov tias bivalent muaj ob chromosomes thiab plaub chromatids, nrog rau ib chromosome los ntawm txhua tus niam txiv.
txhais tau tias lo lus bivalent?
(Entry 1 of 2) 1 chemistry: having a valence of two: divalent bivalent calcium. 2 noob caj noob ces: txuam hauv khub hauv synapsis bivalent chromosomes. 3 immunology: muaj ob qhov chaw sib txuas ua ke bivalent antibody muaj peev xwm los khi rau ob lub molecules ntawm antigen.
