Video: Dab tsi yog qhov peb taw tes kuaj hla?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Peb - point Testcross . Hauv kev txheeb xyuas kev sib txuas, a peb point testcross hais txog kev txheeb xyuas cov qauv qub txeeg qub teg ntawm 3 alleles los ntawm kev sim hla ib qho triple heterozygote nrog triple recessive homozygote. Nws ua rau peb txiav txim siab qhov kev ncua deb ntawm 3 alleles thiab qhov kev txiav txim uas lawv nyob ntawm chromosome.
Ib yam li ntawd, tib neeg nug, peb lub ntsiab lus ntsuas tus ntoo khaub lig pab tsim daim ntawv qhia caj ces li cas?
A peb - point test cross (muaj peb gene ) muab peb cov ntaub ntawv hais txog cov txheeb ze nrug ntawm noob thiab qhia peb txoj kev txiav txim linear uas cov no gene yog muaj nyob rau ntawm chromosome.
Ib yam li ntawd, DCO txhais li cas hauv cov noob caj noob ces? Peb Txuas Cov noob ( DCO ) 1. Yim chav kawm. 2. Txiav txim seb qhov kev txiav txim los ntawm kev sib piv NCO (siab tshaj plaws) nrog DCO (tsawg zaus)
Yog li ntawd, ob lub ntsiab lus xeem hla yog dab tsi?
Ob - point Testcross . A xeem tshawb pom los ntawm Mendel feem ntau cuam tshuam txog kev hla ntawm phenotypically dominant tus neeg nrog phenotypically recessive tus neeg los txiav txim siab qhov zaus thiab zygosity ntawm cov noob caj noob ces. A thiab B deb heev: crossover tshwm sim thiab 50% yuav niam txiv thiab 50% recombinant.
Yuav ua li cas koj daws qhov 3 point cross?
Los ntawm daws ib peb point cross Koj tuaj yeem txiav txim siab ob yam tseem ceeb: kev txiav txim ntawm cov noob ntawm chromosome. txiav txim qhov deb (hauv daim duab qhia chaw) ntawm txhua khub ntawm cov noob. Lub genotype ntawm lub cev yuav tsum yog heterozygous ntawm tag nrho cov loci uas yuav siv rau lub ntoo khaub lig.
Pom zoo:
Dab tsi yog qhov kev kuaj hla hauv cov noob caj noob ces?
Nyob rau hauv cov noob caj noob ces, ib qho kev sim hla, thawj zaug qhia los ntawm Gregor Mendel, koom nrog kev yug me nyuam ntawm ib tus neeg nrog phenotypically recessive tus neeg, txhawm rau txiav txim siab zygosity ntawm yav dhau los los ntawm kev txheeb xyuas qhov feem ntawm cov xeeb ntxwv phenotypes. Zygosity tuaj yeem yog heterozygous lossis homozygous
Lub npe ntawm cov enzyme uas kuaj pom hauv qhov kev kuaj pom zoo catalase yog dab tsi?
Catalase Test- Ntsiab Cai, Siv, Txheej Txheem, Txhais Lus Txhais nrog ceev faj. Qhov kev sim no qhia pom tias muaj catalase, ib qho enzyme uas ua rau cov pa tawm ntawm cov pa oxygen los ntawm hydrogen peroxide (H2O2)
Dab tsi yog qhov sib npaug ntawm txoj kab ntsug hla qhov taw tes (- 4 7?
Qhov sib npaug ntawm kab kab rov tav (4,7) yog y = 7. Nco tseg & rho tawm; Qhov sib npaug ntawm kab ntsug yog ib txwm ntawm hom x = k thiab yog li qhov sib npaug ntawm txoj kab ntsug hla (4,7) yog x = 4
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Dab tsi yog qhov ncig ntawm 10 ko taw txoj kab uas hla?
Kev xam Circumference FromDiameter Yog li yog tias txoj kab uas hla ntawm koj lub voj voog yog 10 ko taw, koj yuav suav 10 × 3.14 = 31.4feet raws li lub voj voog, lossis 10 × 3.1415 = 31.415 ko taw yog tias koj nug kom teb ntau dua