Qhov sib txawv tseem ceeb ntawm txoj hmoo daim ntawv qhia thiab cov lus qhia tshwj xeeb yog theem uas nws tau tsim. Thaum txoj hmoo daim duab qhia tau tsim nyob rau theem blastula thaum ntxov, cov ntawv qhia tshwj xeeb yog tsim nyob rau theem blastula lig.
Kev loj hlob biology yog ib qho tseem ceeb ntawm cov kev tshawb fawb txog biological uas tsom mus rau txoj kev loj hlob ntawm embryonic ntawm cov kab mob, tshwj xeeb tshaj yog nyob rau hauv cov kab mob siab dua, kwv yees qhov tshwm sim ntawm embryonic kev loj hlob. Maps yog cov cuab yeej tseem ceeb los kwv yees qhov tshwm sim ntawm kev loj hlob embryonic. Ob daim ntawv qhia txoj hmoo thiab daim ntawv qhia tshwj xeeb kwv yees qhov tshwm sim ntawm thaj chaw sib txawv ntawm blastula thaum lub sij hawm embryonic txoj kev loj hlob.
Fate Maps yog dab tsi?
Daim ntawv qhia txoj hmoo yog qhov sawv cev ntawm qhov tshwm sim ntawm txhua feem ntawm lub embryo. Nws yog ib txoj hauv kev los kwv yees kev loj hlob ntawm txhua qhov embryonic. Yog li ntawd, daim ntawv qhia txoj hmoo yog tsim nyob rau hauv lub blastula thaum ntxov ntawm embryonic txoj kev loj hlob. Thaum tsim daim ntawv qhia txoj hmoo, txhua cheeb tsam sib txawv hu ua primordia lossis rudiment raug txiav txim siab. Daim ntawv qhia txoj hmoo tsis yog qhov sawv cev mus tas li. Daim ntawv qhia txoj hmoo hloov zuj zus nrog lub sijhawm raws li cov lej sib npaug ntawm tes hloov pauv mus rau ib leeg. Txawm li cas los xij, lawv qhia qee qhov zoo sib xws hauv cov qauv uas lawv tau hloov pauv. Daim ntawv qhia txoj hmoo tuaj yeem siv los kwv yees cov kab mob epidermis, neural tube, notochord, ntshav, somatic nqaij, thiab plab.
Daim duab 01: Fate Map
Qhov txiaj ntsig tseem ceeb ntawm kev tsim daim ntawv qhia txoj hmoo thaum lub sij hawm embryonic txoj kev loj hlob yog los twv seb embryological thwmsim thiab pab nyob rau hauv tracing lub cell kab ntawm ntau yam ntawm lub embryo. Daim ntawv qhia txoj hmoo tuaj yeem tsim tau siv cov kev soj ntsuam me me ntawm embryonic kev loj hlob ntawm ntau lub kaum ntse ntse. Tsis tas li ntawd, daim ntawv qhia txoj hmoo kuj tuaj yeem tsim los siv kev sojntsuam thiab cov ntawv cim ntawm cov hlwb sib txawv ntawm lub embryo.
Daim ntawv qhia tshwj xeeb yog dab tsi?
Daim ntawv qhia tshwj xeeb yog qhov kev kwv yees ruaj khov dua txog kev txhim kho ntawm ntau qhov chaw ntawm blastula. Nws yog tsim nyob rau tom qab theem ntawm blastula theem. Daim ntawv qhia kev qhia tshwj xeeb, yog li ntawd, tau cog lus ntau dua thiab lees paub cov txiaj ntsig ntawm daim ntawv qhia txoj hmoo. Specification daim ntawv qhia kev tsim kho yuav siv sij hawm qhov chaw tom qab ib tug series ntawm explant kev tshawb fawb nyob rau hauv ntau yam cheeb tsam ntawm lub embryo. Tom qab kev txhim kho ntawm daim ntawv qhia tshwj xeeb, thaj chaw sib txawv tuaj yeem raug txheeb xyuas, xws li tsiaj lub kaus mom, lub kaus mom tsiaj thiab lub dorsal thiab thaj chaw ventral marginal. Daim ntawv qhia tshwj xeeb yuav muab kev kwv yees rau yav tom ntej ectoderm, mesoderm, meso-endoderm, thiab endoderm.
Dab tsi zoo sib xws ntawm Fate Maps thiab Specification?
- Daim ntawv qhia txoj hmoo thiab daim ntawv qhia tshwj xeeb yog ob daim ntawv qhia uas kwv yees qhov tshwm sim ntawm thaj chaw sib txawv ntawm lub embryo.
- Ob daim duab qhia chaw yog tsim thaum lub sij hawm ntxov embryonic txoj kev loj hlob xeev.
- Ntxiv mus, kev tsim kho ntawm ob daim duab qhia chaw tuaj yeem siv qhov chaw siv microscopy lossis soj ntsuam.
- Ob daim duab qhia feem ntau ntxiv rau ib leeg; Txawm li cas los xij, lawv tuaj yeem hloov nrog lub sijhawm.
- Tsis tas li ntawd, ob daim ntawv qhia tuaj yeem muaj txiaj ntsig zoo hauv kev loj hlob biology ntawm cov kab mob siab dua.
- Ob daim duab qhia chaw yog tsim los ntawm kev tsim ib daim duab qhia chaw.
Qhov txawv ntawm Fate Maps thiab Specification yog dab tsi?
Fate maps thiab specification maps yog cov cuab yeej kwv yees los soj ntsuam kev loj hlob ntawm embryonic cheeb tsam. Lawv ntxiv ib leeg thiab qhia ntau yam zoo sib xws. Kev tsim kho ntawm daim ntawv qhia txoj hmoo tshwm sim nyob rau theem blastula thaum ntxov, thaum kev tsim kho ntawm daim ntawv qhia tshwj xeeb yuav siv sijhawm nyob rau theem blastula lig. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm txoj hmoo maps thiab specification. Tsis tas li ntawd, txhua daim ntawv qhia kwv yees cov txiaj ntsig sib txawv. Thaum txoj hmoo maps kwv yees lub epidermis, neural tube, notochord, ntshav, somatic nqaij, thiab lub plab, specification maps yuav kwv yees lub ectoderm, mesoderm, meso-endoderm thiab endoderm. Ntxiv mus, kev ruaj ntseg thiab kev hloov pauv ntawm daim ntawv qhia tshwj xeeb tau ua kom ntseeg tau ntau dua li nws tau tsim nyob rau theem tom ntej hauv kev sib piv rau txoj hmoo maps.
Cov hauv qab no infographic teev qhov sib txawv ntawm txoj hmoo daim ntawv qhia thiab cov lus qhia hauv daim ntawv teev npe rau ib sab ntawm kev sib piv.
Summary – Fate Maps vs Specification
Kev txhim kho ntawm txoj hmoo daim ntawv qhia thiab daim ntawv qhia tshwj xeeb yog qhov tseem ceeb rau kev kwv yees qhov tshwm sim ntawm thaj chaw sib txawv ntawm lub embryo ntawm theem blastula. Cov phiaj xwm txoj hmoo tau tsim tsa thaum lub sijhawm blastula thaum ntxov, thaum cov ntawv qhia tshwj xeeb tau tsim tsa thaum lub sijhawm blastula lig. Qhov no yog qhov sib txawv tseem ceeb ntawm txoj hmoo maps thiab specification. Fate maps kwv yees txoj kev loj hlob ntawm cov cheeb tsam xws li epidermis, neural tube, notochord, ntshav, somatic nqaij, thiab plab. Cov ntawv qhia tshwj xeeb kwv yees kev txhim kho ntawm ectoderm, mesoderm, meso-endoderm, thiab endoderm. Nov yog cov ntsiab lus ntawm qhov sib txawv ntawm txoj hmoo maps thiab specification.
