Yaj thiab tshis muaj kev sib raug zoo Ob leeg nyob hauv tib lub tsev neeg, Caprinae, thiab qee zaus nws nyuaj rau qhia seb hom tsiaj twg los yog hom yog tshis lossis yaj. Ob leeg tshis thiab yaj yog hoofed mammals, los yog ungulates. Tshis thiab yaj tej zaum yuav sib yuav, txawm tias lawv cov xeeb ntxwv feem ntau tsis muaj menyuam.
Yaj thiab tshis sib raug zoo npaum li cas?
Yaj muaj feem cuam tshuam nrog tshis. Ob leeg yaj thiab tshis ua ib pawg neeg hu ua Caprini. Lub subfamily Caprini ntseeg tau tias tau hloov zuj zus kwv yees li kaum mus rau nees nkaum lab xyoo dhau los nyob rau hauv toj siab ntawm Central Asia.
Tsab tuaj yeem ua rau yaj yaj?
Nws tsis tshua muaj rau yaj thiab tshis ua khub zoo, thiab feem ntau ua rau cev xeeb tub tsis tau nqa mus rau lub sijhawm. Raws li Gary Anderson, tus kws tshaj lij tshwj xeeb ntawm UC Davis, cov hybrids no tsis tshua muaj tshwm sim ntawm tus txiv neej tshis thiab cov yaj yaj (zoo li cov ntaub ntawv nrog Murphy's geep).
Puas tshis thiab yaj puas muaj poj koob yawm txwv?
Cellular genetic tshawb fawb pom tias cov yaj thiab tshis tau hloov zuj zus los ntawm cov poj koob yawm txwv: Rupicaprids thiab karyotype ntawm tshis zoo ib yam li cov poj koob yawm txwv (Li li al., 2000).
Puas npua nrog yaj?
Zoo sau tseg tias vaj thiab npua qee zaum yuav ua khub (videos >>). Tseeb tiag, txawm tias Akkadians thaum ub paub tias npua thiab yaj ua qee zaum koom nrog cov dej num no (Freedman 2017, p. 6). Nws yog ib qho xwm txheej tshwm sim.
