Video: Yuav ua li cas ib tug gene npog qhov kev qhia ntawm lwm gene?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Seb puas los tsis yog lawv sorting ntawm nws tus kheej, noob tuaj yeem cuam tshuam txog qib ntawm noob cov khoom ntawd kev qhia ntawm ib qho allele rau ib gene masks los yog hloov cov kev qhia ntawm ib qho allele rau txawv gene . Qhov no hu ua epistasis.
Tsis tas li ntawd, dab tsi yog epistatic genes thiab yuav ua li cas lawv npog qhov kev qhia ntawm lwm cov noob?
Cov noob epistatic . Ib txhia genes npog qhov kev qhia ntawm lwm cov noob ib yam li ib tug tag nrho dominant allele npog qhov kev qhia ntawm nws recessive counterpart. A noob uas daim npog qhov ncauj cov nyhuv phenotypic ntawm lwm gene npe a epistatic noob ; tus noob nws subordinates yog hypostatic noob.
Tom qab ntawd, lo lus nug yog, puas yog qhov npog ntawm ib lub noob phenotype los ntawm lwm tus? Alleles uas ua rau lub noob ntawm ib kab mob, hu ua collectively li a genotype, muaj nyob rau hauv khub uas zoo tib yam, hu ua homozygous, los yog mismatched, hu ua heterozygous. Thaum twg ib ntawm alleles ntawm a heterozygous khub daim npog qhov ncauj lub xub ntiag ntawm lwm , recessive allele, nws yog hu ua a tseem ceeb allele.
Tsis tas li ntawd, cov noob caj noob ces cuam tshuam nrog ib leeg li cas?
Gene kev sib cuam tshuam tshwm sim thaum ob los yog ntau tshaj allelic los yog non-allelic noob ntawm tib genotype cuam tshuam qhov tshwm sim ntawm cov cim tshwj xeeb phenotypic. Tsis tas li ntawd nyob rau hauv noob networks, raws li kev sib piv ntawm cov neeg nyob sib ze, functionality ntawm muaj feem xyuam noob muaj peev xwm deciphered (Schlitt li al., 2003).
Dab tsi yog cov qauv sib txawv ntawm cov noob rau ib qho zoo?
Cov noob tuaj hauv txawv ntau yam, hu ua alleles. Somatic hlwb muaj ob alleles rau txhua tus noob , nrog rau ib qho allele muab los ntawm txhua tus niam txiv ntawm lub cev.
Pom zoo:
Qhov txawv ntawm qhov loj ntawm ib tug proton thiab qhov loj ntawm ib tug electron yog dab tsi?
Protons thiab neutrons muaj kwv yees li qub, tab sis lawv yog ob qho tib si loj dua li cov hluav taws xob (kwv yees li 2,000 npaug loj li electron). Tus nqi zoo ntawm ib qho proton yog sib npaug hauv qhov loj rau qhov tsis zoo ntawm tus electron
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
Koj puas tuaj yeem npog tus txiv neej lub qhov npog?
Nws yog qhov tsis muaj hmoo tab sis feem ntau qhov tseem ceeb uas lub hau npog npog tau nruab rau hauv nruab nrab ntawm cov nyom, vaj, txoj kev tsheb, chaw nres tsheb lossis txoj hauv kev. Txawm hais tias nws tsis yog lub tswv yim zoo tshaj plaws rau lub cev npog lub npog manhole, koj tuaj yeem nruab ib lub hau npog npog. Cov no muaj ntau qhov kev xaiv ntawm infilling rau disguise thiab muab lub hau
Yuav ua li cas ib tug geologist yuav qhia tau hais tias ib tug quav yog ib tug syncline thiab anti-line?
Geologic Structures (Part 5) Anticlines yog folds nyob rau hauv uas txhua ib nrab ntawm cov quav dips deb ntawm lub crest. Synclines yog folds nyob rau hauv uas txhua ib nrab ntawm cov quav dips mus rau lub trough ntawm lub quav. Koj tuaj yeem nco qab qhov sib txawv los ntawm kev ceeb toom tias anticlines tsim "A" zoo, thiab synclines tsim hauv qab ntawm "S."