Kev Kho Mob Txhais ntawm telolecithal ntawm lub qe.: muaj cov yolk ntau ntau thiab concentrated ntawm ib tug ncej- piv centrolecithal, isolecithal.
Lub qe telolecithal yog dab tsi?
Telolecithal (Greek: τέλος (telos)=kawg, λέκιθος (lekithos)=yolk), hais txog rau qhov tsis sib xws ntawm cov qe nyob rau hauv cytoplasm ntawm ovums pom nyob rau hauv cov noog, cov tsiaj reptiles, ntses, thiab monotremes. … Hom qe no tau txais kev sib cais ntawm cov meroblastic cleavage, qhov twg cov qe tsis koom nrog hauv cov hlwb thaum lub sij hawm faib ntawm tes.
Puas yog qaib qe telolecithal?
noog muajtelolecithal hom qenrog ib tug loj thiab ntom yolk kis thoob plaws hauv feem ntau ntawm tus ncej ntawm cov embryo. … Kev loj hlob embryonic nyob rau hauv cov noog tshwm sim nyob rau hauv lub blastodisc (tseem hu ua germinal disc los yog germinal txheej).
Dab tsi yog qhov txawv ntawm Isolecithal qe thiab telolecithal qe?
Qhov sib txawv tseem ceeb ntawm Telolecithal thiab Centrolecithal qe yog raws li kev faib tawm ntawm cov qe nyob rau hauv cytoplasm ntawm ovum. Nyob rau hauv telolecithal qe, lub yolk yog unevenly faib nyob rau hauv lub ovum cytoplasm. Nyob rau hauv centrolecithal qe, lub qe yog concentrated mus rau qhov chaw ntawm lub zes qe menyuam cytoplasm.
Qhov txawv ntawm Isolecithal thiab telolecithal yog dab tsi?
Isolecithal lossis Homolecithal Egg: Hauv cov qe isolecithal, tsawg heev ntawm cov yolk tam sim no yog sib npaug thoob plaws hauv lub qe.ooplasm (xws li echinoderms, Amphioxus, tsiaj txhu). … Slightly Telolecithal- Hom qe no tsuas muaj me me ntawm cov yolk uas faib tsis sib npaug.
