Video: Dab tsi yog ob hom hauv paus hauv DNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov Bases ntawm DNA
Txhua yam ntawm no hauv paus Feem ntau sau ib tsab ntawv: A (adenine), C (cytosine), G (guanine), T (thymine). Cov hauv paus tuaj hauv ob pawg: thymine thiab cytosine yog pyrimidines, thaum adenine thiab guanine yog purines ().
Ib yam li ntawd, 2 hom nitrogenous bases yog dab tsi?
Nitrogen hauv paus raug cais ua ob txawv hom purines (adenine thiab guanine) thiab pyrimidines (thymine, cytosine, thiab uracil). Ib qho purine yuav hydrogen-bond rau pyrimidine. Adenine ib txwm khi nrog thymine (hauv DNA) lossis nrog uracil (hauv RNA) nrog ob hydrogen bonds.
Dab tsi yog cov hauv paus pom hauv DNA? Hauv DNA , muaj plaub qhov sib txawv hauv paus : adenine (A) thiab guanine (G) yog cov purines loj dua. Cytosine (C) thiab thymine (T) yog cov pyrimidines me. RNA kuj muaj plaub qhov sib txawv hauv paus . Peb ntawm no yog tib yam li hauv DNA : adenine, guanine, thiab cytosine.
Ntawm no, ob lub purines hauv DNA yog dab tsi?
Tseem ceeb cov purines Muaj ntau yam tshwm sim cov purines . Lawv suav nrog nucleobases adenine (2) thiab guanine (3). Hauv DNA , cov hauv paus no tsim cov ntawv cog lus hydrogen nrog lawv cov pyrimidines ntxiv, thymine thiab cytosine, feem.
Dab tsi yog lub hauv paus khub hauv DNA?
A pib khub (bp) yog ib chav tsev uas muaj ob lub nucleobases khi rau ib leeg los ntawm hydrogen bonds. Dictated los ntawm cov qauv hydrogen bonding, Watson-Crick puag khub (guanine-cytosine thiab adenine-thymine) tso cai rau DNA helix los tswj cov qauv helical tsis tu ncua uas yog nyob ntawm nws cov nucleotide ib ntus.
Pom zoo:
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