Leej twg muaj DNA ntau tshaj?
Leej twg muaj DNA ntau tshaj?

Video: Leej twg muaj DNA ntau tshaj?

Video: Leej twg muaj DNA ntau tshaj?
Video: LEEJ TWG MUAB DAIM AV NPLOG TIG UA TSHAV ROG 10.31.22 2024, Kaum ib hlis
Anonim

Nrog 150 billion puag khub ntawm DNA ib lub xovtooj ntawm tes (50 npaug ntau dua li ntawm tib neeg haploid genome), Paris japonica tuaj yeem muaj cov genome loj tshaj plaws ntawm txhua yam kabmob muaj sia; tus DNA los ntawm ib lub xovtooj ntawm tes uas nthuav tawm qhov kawg-rau-kawg yuav ntev dua 300 ko taw (91 m).

Yog li ntawd, leej twg muaj DNA complex?

Dej Flea. Lub microscopic, pom-los ntawm dej flea yog qhov nyuaj tshaj plaws tsiaj uas tau kawm, genomically hais lus. Daphnia pulex yog thawj crustacean puas tau muaj nws cov genome sequenced, thiab nws hloov tawm nws muaj txog 31,000 noob - 25 feem pua ntau tshaj peb. tib neeg.

Tsis tas li ntawd, hom dab tsi muaj cov noob caj noob ces? Cov kws tshawb fawb tau tshawb pom tias cov tsiaj uas muaj cov noob feem ntau - txog 31,000 - yog qhov ze-microscopic dej tshiab Crustacean Daphnia pulex , los yog dej flea . Los ntawm kev sib piv, tib neeg muaj txog 23,000 noob. Daphnia yog thawj crustacean kom muaj nws genome sequenced.

Ntawm no, dab tsi yog qhov feem ntau Neanderthal DNA pom nyob rau hauv ib tug neeg?

"Qhov ratio ntawm Neanderthal -inherited genetic khoom yog hais txog 1 mus rau 4 feem pua [tom qab refined rau 1.5 rau 2.1 feem pua] thiab yog pom nyob rau hauv tag nrho cov tsis-African pejxeem. Nws tau pom tias 20 feem pua ntawm Neanderthal DNA ciaj sia nyob rau niaj hnub tib neeg , notably qhia nyob rau hauv daim tawv nqaij, plaub hau thiab kab mob ntawm cov neeg niaj hnub.

Tib neeg puas muaj cov gene ntau tshaj?

Cov Tib neeg Genome Project kwv yees li ntawd tib neeg muaj ntawm 20,000 thiab 25,000 noob . Txhua tus neeg muaj ob daim ntawv luam ntawm txhua tus noob , ib tug tau txais los ntawm txhua tus niam txiv. Feem ntau cov noob yog tib yam nyob rau hauv tag nrho cov neeg, tab sis ib tug tsawg tus naj npawb ntawm noob (tsawg dua 1 feem pua ntawm tag nrho) sib txawv me ntsis ntawm tib neeg.

Pom zoo: