G-C hauv paus khub muaj 3 daim ntawv cog lus hydrogen, thaum A-T base khub muaj ob. Yog li ntawd, ob-stranded DNA nrog ntau dua ntawm G-C puag khub yuav muaj zog sib koom ua ke, ruaj khov dua, thiab yuav muaj qhov kub thiab txias dua.
4 lub hauv paus ntawm DNA yog dab tsi?
Muaj plaub nucleotides, lossis hauv paus, hauv DNA: adenine (A), cytosine (C), guanine (G), thiab thymine (T). Cov hauv paus no tsim cov khub tshwj xeeb (A nrog T, thiab G nrog C).
AT GC txoj cai yog dab tsi?
Chargaff txoj cai hais tias DNA los ntawm txhua hom kab mob yuav tsum muaj 1: 1 stoichiometric piv ntawm purinethiab pyrimidine hauv paus (piv txwv li, A + G=T + C) thiab, tshwj xeeb tshaj yog, tus nqi ntawm guanine yuav tsum sib npaug rau cytosine thiab tus nqi ntawm adenine yuav tsum sib npaug rau thymine.
Qhov twg muaj zog ua khub AT lossis GC?
Adenine khub nrog thymine los ntawm ob daim ntawv cog lus hydrogen thiab cytosine khub nrog guanine los ntawm peb daim ntawv cog lus hydrogen (Berg thiab … daim ntawv cog lus khub muaj zog dua tus khub A-T puag.
GC khub yog dab tsi?
GC khub (lossis CG khub) yog pab khub uas tsim ntawm guanine thiab cytosine GC khub muaj zog dua AU lossis GU khub. Feem ntau cov qauv kev sim ua tiav muaj nyob nruab nrab ntawm 50-70% GC khub. Cov qauv tsim uas muaj ntau dhau ntawm GC khub yog qhov nyuaj rau kev sib txuas thiab ua rau tsis zoo.
