Nws muaj tseeb zoo tib yam ntxaib sib koom lawv DNA code rau ib leeg. Qhov no yog vim cov menyuam ntxaib zoo tib yam tau tsim los ntawm tib cov phev thiab qe los ntawm lawv txiv thiab niam. (Qhov sib txawv, cov menyuam ntxaib yog tsim los ntawm ob lub phev sib txawv thiab ob lub qe sib txawv.)
Cov menyuam ntxaib monozygotic puas muaj cov noob tib yam?
Ib yam ntxaib tseem hu ua monozygotic ntxaib. Lawv tshwm sim los ntawm fertilization ntawm ib lub qe uas faib ua ob. Ib tug ntxaib sib faib tag nrho lawv cov noob thiab ib txwm sib deev.
Yuav ua li cas feem pua ntawm DNA ua monozygotic ntxaib sib koom?
Vim li ntawd, cov menyuam ntxaib no sib koom tsis tshua muaj 89 feem pua ntawm lawv cov DNA. Lub caij no, cov menyuam ntxaib zoo ib yam sib koom 100 feem pua ntawm lawv cov DNA, thiab cov kwv tij ntxaib sib faib 50 feem pua ntawm lawv cov DNA (tib yam li cov kwv tij).
Cov menyuam ntxaib monozygotic puas muaj cov mitochondrial DNA sib txawv?
Monozygotic (MZ) menyuam ntxaib, suav tias yog caj ces zoo ib yam, tsis tuaj yeem sib txawv ntawm ib leeg los ntawm kev kuaj DNA tus qauv. … Piv nrog rau cov DNA nuclear, mitochondrial DNA (mtDNA) muaj kev hloov pauv ntau dua; Yog li ntawd, qhov sib txawv me me theoretically muaj nyob hauvMZ ntxaib 'mitochondrial genome (mtGenome).
Ib tug ntxaib DNA zoo ib yam?
Dr. Cantor piav qhia tias feem ntau, ib khub ntawm cov menyuam ntxaib sib npaug sib koom tib DNA thaum lawv sib cais. Txawm li cas los xij, nws hais ntxiv, aDaim ntawv tshaj tawm tsis ntev los no pom tias qee qhov kev tsim cov ntxaib embryos twb muaj qhov sib txawv ntawm caj ces.
