Video: Yuav ua li cas xaiv ib tug zoo hiav txwv urchin?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Mus rau gonads
Cov cov urchin umm, gonads, yog nws tsuas yog ediblepart. Yuav tsum muaj tsib zaug symmetry ntawm gonads sab hauv - maj mam co lub qhib hiav txwv urchin hauv hiav txwv dej (qhov no yuav tso tawm qhov tsis tuaj yeem zoo li lub plab), nqa ib rab diav, thiab tshem tawm cov txiv kab ntxwv-ish sab hauv.
Kuj paub, ntev npaum li cas dej hiav txwv urchin nyob tshiab?
Nws yog kwv yees tias lub txee lub neej nyob seaurchins yog nruab nrab ntawm tsib mus rau cuaj hnub los ntawm kev ntes ntawm 3-4 ° C.
Dub hiav txwv Urchin puas lom? Ib txhia hiav txwv urchins muaj kev phom sij ntau dua li lwm tus. Ib ob peb hom muaj venom spines nrog muaj zog thiab muaj peev xwm ua rau tuag taus. Lub paj urchin , piv txwv li, yog npog hauv me me venom qaum. Tsis zoo li ib dej hiav txwv sting, ib tug tom tsis tawm spines qab.
Ua li no, puas tuaj yeem noj cov hiav txwv urchins?
Txoj kev nyiam tshaj plaws hiav txwv urchin yog los ntawm noj nws nyoos, zoo ib yam li yuav ua li cas ib tug yuav txaus siab rau oysters orsushi. Hiav txwv urchin yuav tsum saj zoo li dej hiav txwv, tab sis nws yuav tsum tsis txhob saj fishy. Yog tias ua tau, nws yuav zoo li ploj mus. Tsuas yog ib feem ntawm a hiav txwv urchin yog nws gonads.
Hiav txwv urchin saj zoo li cas?
Nws yog dab tsi Tastes Like : Uni "roe" yog feem ntau piav raws li saj nyiam tus hiav txwv yam tsis muaj ntses, zoo ib yam li noj caviar lossis briny oysters. Colgate piav qhia urchin raws li muaj "creamy dej hiav txwv, me ntsis qab zib" tab sis sau tseg tias tus tsiaj'sdiet-an cov urchin gotta noj-yuav ua rau adifference, ib yam nkaus thiab.
Pom zoo:
Cov hiav txwv urchin gametes tau li cas?
Sea Urchin Gamete Collection. Spawning tuaj yeem raug ntxias hauv cov neeg laus hiav txwv urchins los ntawm kev txhaj tshuaj 1 ml ntawm 0.5M KCl tov rau hauv ntau qhov chaw hauv cov ntaub mos muag nyob ib ncig ntawm lub qhov ncauj. Tsis pub dhau ob peb feeb, gametes yuav tsum tshwm sim: cov phev yog dawb dawb, lub qe yog tan rau txiv kab ntxwv
Yuav ua li cas yog qhov tshwm sim uas ib tug poj niam dig muag xim uas yuav ib tug txiv neej uas tsis pom kev zoo yuav muaj xim dig muag me nyuam?
Yog tias tus poj niam uas muaj lub zeem muag zoo li no (heterozygous rau qhov muag tsis pom xim) yuav ib tug txiv neej ib txwm muaj (XY), cov xeeb ceem hauv qab no tuaj yeem xav tau hauv F2 tiam: ntawm cov ntxhais, 50% yog ib txwm muaj thiab 50% yog cov neeg nqa khoom rau cov kab mob; ntawm cov tub, 50% yog xim dig muag thiab 50% yog qhov pom kev zoo
Yuav ua li cas yog ib tug piv txwv ntawm ib tug rational naj npawb uas tsis yog ib tug tag nrho?
Tus lej "rational" yog qhov piv ntawm ob tus lej. Piv txwv li, cov hauv qab no yog cov lej rational, thiab tsis muaj leej twg yog tus lej: 1 / 2. 2 / 3
Hiav txwv urchin txav li cas?
Feem ntau cov hiav txwv urchins siv lawv txhais taw los dai rau hauv qab thaum pub mis, tab sis lawv tuaj yeem txav nrawm, taug kev ntawm lawv txhais taw, nraub qaum, lossis txawm tias lawv cov hniav. Cov pob txha tuaj yeem tig ntau ncig ntawm lub pob no. Nyob rau hauv lub hiav txwv urchin nyob, daim tawv nqaij thiab cov nqaij ntshiv npog qhov kev sim thiab tuaj yeem rub tawm kom txav cov pob txha
Yuav ua li cas ib tug geologist yuav qhia tau hais tias ib tug quav yog ib tug syncline thiab anti-line?
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