2024 Tus sau: Luke Adderiy | [email protected]. Kawg hloov kho: 2024-01-10 19:34
Kev xaiv tsis muaj zog hauv evolutionary biology yog thaum cov tib neeg uas muaj cov phenotypes sib txawv muaj qhov zoo sib xws, piv txwv li ib qho phenotype tsis muaj zog dua lwm tus. Kev xaiv tsis muaj zog, yog li ntawd, yog txoj kev xav hloov pauv los piav qhia txog kev saib xyuas ntawm ntau yam phenotypes hauv cov pejxeem ruaj khov.
Vim li cas kev xaiv tsis muaj zog hauv cov neeg tsawg?
Genetic drift: Genetic variation yog txiav txim siab los ntawm kev sib koom ua ke ntawm kev xaiv ntuj thiab genetic drift (xov xwm). Hauv cov neeg me, kev xaiv tsis tshua muaj txiaj ntsig, thiab qhov tseem ceeb ntawm cov noob caj noob ces yog siab dua vim tias kev tshem tawm cov alleles tuaj yeem ua ntau zaus thiab 'kho' hauv cov pej xeem vim muaj caij nyoog.
Kev xaiv muaj zog txhais li cas?
Abstract. Kev xaiv muaj zog txhais tau hais tias nrawm dua evolution-uas yog, lub zog ntau dua, qhov hloov pauv sai dua. Qhov no pom tau tias nws tus kheej pom tseeb, txawm li cas los xij, tau muab los ntawm qhov kev xav tias kev hloov pauv caj ces hauv cov neeg feem ntau yog muab los ntawm kev hloov pauv (piv txwv li kev hloov pauv-tsav kev hloov pauv).
Dab tsi yog qhov tsis muaj zog allele?
Recessiveness: "tsis muaj zog" allele. Lub recessive allele tsuas yog qhia yog tias ob qho tib si tam sim no. Tsuas yog ib daim ntawv yog xav tau rau cov tseem ceeb allele. Cov allele recessive feem ntau txhais tau tias yog tsab ntawv qis, qhov tseem ceeb allele feem ntau txhais tau tias yog tsab ntawv loj.
roob robertson cuam tshuam dab tsi?
Hill–Robertson cuam tshuam yog ib qho tshwm sim uas, nyob rau hauv cov pej xeem finite, kev xaiv ua ntawm ib qho chaw txo cov kev ua tau zoo ntawm kev xaiv ntawm kev sib txuas loci (Hill and Robertson 1966; Felsenstein 1974; Comeron et al. 2008)..
Pom zoo:
Thaum xaiv nom tswv xaiv nom xaiv nom li cas?
Feem ntau, cov tog neeg xaiv tsa cov neeg xaiv tsa uas muaj peev xwm xaiv tsa hauv lawv lub Xeev cov rooj sib tham lossis lawv xaiv lawv los ntawm kev pov npav ntawm pawg thawj coj ntawm tog. … Thaum cov neeg pov npav hauv txhua lub Xeev tau pov npav rau Thawj Tswj Hwm tus neeg xaiv tsa lawv xaiv lawv xaiv lawv lub Xeev cov neeg xaiv tsa.
Yuav tsum hneev rov qab yuav tsis muaj zog thaum tsis siv?
Fiberglass laminated longbows thiab recurves tsuas yog yuav tsum tsis muaj zogyog tias koj tsis npaj yuav tua lawv rau lub sijhawm ntev lossis xav tias yuav mus ncig nrog lawv hauv ib qho lub tsheb kub. Txhua-ntoo laminated bows thiab selfbows yuav tsum tau unstrung thaum koj ua tiav shooting los tiv thaiv cov ceg los ntawm tuav lub khoov zoo .
Puas tsis muaj zog acids tsis muaj zog ua hluav taws xob?
Cov ntsiab lus muaj zog thiab tsis muaj zog piav qhia txog lub peev xwm ntawm cov kua qaub thiab cov kua qaub thiab lub hauv paus Rau cov kua dej ntawm cov kua qaub tsis muaj zog, qhov kev sib cais tsis tu ncua yog hu ua acid ionization tas li (Ka).
Puas antacids muaj zog lossis tsis muaj zog?
Antacids yog tsis muaj zog uas ua los ntawm kev ua kom tsis zoo ntawm plab hnyuv (Fig. 4.8). Nce pH ntawm lub plab cov ntsiab lus ua rau muaj kev cuam tshuam ntawm kev ua ntawm pepsin uas exacerbates ulceration vim acid. Yog li, antacids tuaj yeem siv los txo qhov mob plab los ntawm kev tso kua qaub ntau dhau .
Leej twg yog qhov muaj zog thiab qhov tsis muaj zog?
Lub zog txhais tau tias yog tus cwj pwm zoo lossis kev txawj ntse uas suav tias yog qhov zoo Lub zog muaj xws li kev paub, cwj pwm, kev txawj, thiab kev txawj ntse. Kev qaug zog tsuas yog qhov sib txawv. Kev qaug zog yog txhais tau tias yog tus cwj pwm zoo lossis kev txawj ntse uas suav tias yog qhov tsis zoo lossis tsis zoo li tsim .