Vertebrates tau hloov kho vertebrae thiab tav nyob rau hauv ntau txoj kev; Cov vertebra tseem ceeb tau rov hais dua thiab hloov mus rau ntau hom pob txha: sacral, lumbar, thoracic, thiab ncauj tsev menyuam. Txawm li cas los xij, tej zaum ib qho piv txwv zoo tshaj plaws ntawm serial homology tuaj yeem pom nyob rau hauv lub cev tsim ntawm hom cray-fish.
Ib qho piv txwv ntawm homology yog dab tsi?
Muaj serial homology, piv txwv li, nruab nrab ntawm caj npab thiab txhais ceg ntawm tib neeg, nruab nrab ntawm xya lub ncauj tsev menyuam ntawm cov tsiaj nyeg, thiab nruab nrab ntawm cov ceg lossis nplooj ntoo. Cov kab ke sib koom ua ke ntawm arthropods yog cov piv txwv zoo ntawm serial homology.
Dab tsi yog homology hauv biology?
: qhov zoo ib yam ntawm cov tswv cuab sib txawv ntawm ib qho ntawm cov qauv (xws li vertebrae) hauv ib lub cev.
Dab tsi yog qhov sib txawv hauv cov arthropods?
Nws tau raug qhia tias arthropods, thiab ib yam li cov crustaceans, tau muaj sia nyob thiab txawm tias muaj kev vam meej hauv txhua qhov chaw thiab hom kev nyob vim tias muaj ntau yam ua tau los ntawm serial homology. Serial homology yog kev hloov pauv ntawm cov kabmob sib xws kom muaj cov haujlwm sib txawv.
3 yam piv txwv ntawm homologous qauv yog dab tsi?
Ib qho piv txwv ntawm homologous qauv yog lub forelimbs ntawm vertebrates, qhov twg tis ntawm puav thiab noog, caj npab ntawm primates, pem hauv ntej flippers ntawm whales thiab forelegs ntawm plaub -leggedvertebrates zoo li dev thiab khej yog tag nrho muab los ntawm tib yam poj koob yawm txwv tetrapod qauv.
