Qhov sib txawv tseem ceeb ntawm DNA ntu thiab centimorgans yog qhov DNA ntu yog ib feem ntawm nucleotide ib ntus thaum centimorgan yog ib chav ntsuas uas piav qhia qhov ntev ntawm DNA tawg.
Chromosomes yog cov qauv zoo li cov qauv uas cov ntaub ntawv caj ces raug muab zais. Lawv yog tsim los ntawm DNA thiab histone proteins. Tib neeg genome muaj 23 khub ntawm chromosomes. DNA nyob rau hauv chromosomes yog soj ntsuam nyob rau hauv cov noob caj noob ces thiaj li yuav kuaj cov noob thiab lawv phenotypes. Cov kab ke nucleotide, qhov kev txiav txim ntawm nucleotides, ntev ntawm ib qho nucleotide ib ntus thiab kev hloov pauv ntawm nucleotides yog cov ntaub ntawv tseem ceeb hauv kev tshuaj ntsuam gene. Centimorgan yog chav tsev uas piav txog qhov ntev ntawm DNA ntu.
DNA Segments yog dab tsi?
DNA ntu yog cov DNA ntawm chromosomes. Lawv yog cov tawg tshwj xeeb lossis ntu ntawm DNA. Qhov kev ncua deb ntawm DNA ntu yog ntsuas los ntawm centimorgans. Kev sib koom DNA ntu yog cov DNA sib lawv liag ntawm ob kab mob. Yog li ntawd, ntu DNA sib koom lossis ntu sib txuam yog qhov tseem ceeb thaum txiav txim siab cov kab mob sib ze. Qhov tshwj xeeb DNA ntu ntawd tau txais los ntawm ib tug poj koob yawm txwv. Qhov ntev ntawm qhov sib koom yog, qhov ntau dua qhov tshwm sim uas nws tau txais los ntawm ib tug poj koob yawm txwv.
Daim duab 01: DNA Ntu
DNA ntu yog tsim los ntawm deoxyribonucleotides. Deoxyribonucleotides yog tsim los ntawm plaub lub hauv paus (A, T, G thiab C), deoxyribose qab zib thiab ib pawg phosphate. DNA yog ob-stranded, muaj ob tug ntxiv DNA strands sib raug zoo los ntawm H bonds. DNA ntu muaj nyob rau hauv tag nrho 46 chromosomes nyob rau hauv tib neeg genome.
Centimorgans yog dab tsi?
Centimorgan lossis cM yog chav tsev uas piav qhia qhov ntev ntawm ib daim DNA. Yog li ntawd, nws ntsuas qhov ntev ntawm nucleotide ib ntus. Hauv lwm lo lus, centimorgan yog qhov ntsuas ntawm DNA. Tshwj xeeb tshaj yog, nws piav qhia qhov kev ncua deb ntawm ob txoj haujlwm ntawm chromosome. Hauv kev tshuaj ntsuam caj ces, siv cov centimorgans tuaj yeem qhia tias koj qhia ntau npaum li cas DNA nrog koj cov txheeb ze. Ntxiv mus, qhov ntev ntawm cov ntu DNA tshwj xeeb uas koj faib tuaj yeem piav qhia meej. Qhov ntau DNA ntu koj faib, ntau qhov centimorgans koj qhia rau ib tug neeg, thiab ntau koj nyob ze rau tus neeg ntawd.
Centimorgans txawv ntawm cov units xws li centimeter, kilometer, thiab lwm yam. uas ntsuas lub cev nyob deb. Centimorgans ntsuas qhov tshwm sim ntau dua li qhov sib nrug ntawm lub cev. Yog li ntawd, centimorgans pib piav qhia txog DNA ntu uas koj muaj nyob rau hauv ib qho (sib faib) nrog rau lwm tus thiab muaj feem cuam tshuam txog kev sib txuas ntawm caj ces. Raws li kev sib koom centimorgans, kev kuaj DNA tuaj yeem qhia txog kev cuam tshuam ntawm koj DNA nrog cov txheeb ze.
Dab tsi zoo sib xws ntawm DNA Ntu thiab Centimorgans?
- Qhov ntev ntawm ntu DNA yog qhia hauv centimorgans.
- Ob qhov DNA thiab centimorgans qhia koj ntau npaum li cas DNA koj faib nrog cov txheeb ze ze.
Qhov txawv ntawm DNA Segments thiab Centimorgans yog dab tsi?
DNA ntu yog ntu ntawm DNA ntawm chromosomes. Centimorgan yog ib chav tsev uas ntsuas qhov ntev ntawm DNA ntu. Yog li, qhov no yog qhov sib txawv ntawm DNA ntu thiab centimorgans. DNA ntu yog nucleotide sequences, thaum centimorgan yog ib chav ntsuas.
Cov infographic hauv qab no qhia txog qhov sib txawv ntawm DNA ntu thiab centimorgans.
Summary – DNA Segments vs Centimorgans
DNA ntu yog ib feem ntawm DNA ntawm chromosome. Cov ntu sib koom thiab ntu poj koob yawm txwv qhia txog kev sib raug zoo ntawm cov kab mob. Centimorgan yog qhov ntsuas ntawm DNA. Nws piav qhia qhov kev ncua deb ntawm ob txoj haujlwm hauv chromosome (DNA fragment) lossis ntev ntawm ib ntu ntawm DNA. Yog li, qhov no qhia txog qhov sib txawv ntawm DNA ntu thiab centimorgans.
