You'll be able to mark your mistakes quite. U. Definition and meaning can be found here:One unit is defined as the amount of Uracil-DNA Glycosylase required to completely degrade 1 μg purified single-stranded uracil-containing DNA (bacteriophage M13, grown in E. Definition noun plural: nucleobases (biochemistry) The base in the nucleic acid, e. Tags for the entry "uracil" What uracil means in Punjabi, uracil meaning in Punjabi, uracil definition, explanation, pronunciations and examples of uracil in Punjabi. Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. It is found in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. Uracil DNA-glycosylase (UNG) is a DNA repair enzyme that removes the highly mutagenic uracil lesion from DNA using a base flipping mechanism. uracil (yoor-ă-sil) n. A) nitrogenous bases B) a repeating sugar-nucleotide-sugar-nucleotide pattern C) a repeating sugar-phosphate-sugar. What is definition of uracil? Listen to pronunciation. , USA pronunciation n. Within a double-stranded DNA molecule, thymine bases on one strand pair with adenine bases on the opposite strand. Uracil: Definition & Structure. Discover if uracil is found in DNA. The five bases are adenine, guanine, cytosine, thymine, and uracil, which have the symbols A, G, C, T, and U, respectively. Difference Between Uridine and Uracil Definition. Chapter 11 / Lesson 9. It has only one phosphate group attached to the. Polymers (Basel) . Chapter 11 / Lesson 9. updated: November 18, 2023 Definition 00:00 00:29 Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). coli CJ236 dut−ung −) at +37°C in 60 minutes. Pronunciation of Cytidine: Learn how to pronounce the word Cytidine. It is functionally. It is readily deaminated into uracil through spontaneous reactions as it is unstable. Understand the definition and structure of the compound uracil. Find uracil similar words, uracil synonyms. Uracil: Definition & Structure. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Press and start speaking. You should be able to mark your mistakes quite easily. . uracil: A pyrimidine derivative andone of the major component bases ofnucleotides and the nucleic acidRNA. m ɪ ˌ d iː n /) is an aromatic, heterocyclic, organic compound similar to pyridine (C 5 H 5 N). However, an optimal protocol for TNT has not yet been established. Uracil like other pyrimidines is an aromatic heterocyclic compound with a pyrimidine ring that comprises alternating nitrogen and carbon atoms. Why is uracil used in RNA? Uracil is energetically less expensive for the production of thymine. Both take part in nucleic acid synthesis and metabolism. Uracil is a pyrimidine base that is used in RNA in place of thymine. It was isolated from herring sperm and also produced in a laboratory in 1900–1901. A nucleotide is composed of a nitrogenous base, deoxyribose (five-carbon sugar), and at least one phosphate group. Definition of a nucleotide. ; Record yourself saying 'uracil' in full sentences, then watch yourself and listen. adenine: [noun] a purine base C5H5N5 that codes hereditary information in the genetic code in DNA and RNA — compare cytosine, guanine, thymine, uracil. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The two. Uracil | Definition, Structure & Function. Discover if uracil is found in DNA. Definition of Uracil. A pyrimidine is an organic compound known as an aromatic heterocyclic compound and has the molecular formula of C 4 H 4 N 2. a single ring. The ribose sugar of RNA is a cyclical structure consisting of five. uracil pronunciation. New. The response rate is improved by adding leucovorin [107 R]. The deoxyribonucleic acid (DNA) of a typical mammalian cell contains about 3 × 10 9 nucleotides. Chapter 11 / Lesson 9. 3. Nucleic acids (NA) are key molecules that contain genetic information and participating in protein synthesis. Chapter 11 / Lesson 9. David. Uracil base pairs with adenine in an RNA molecule and is a pyrimidine like. Uracil: Definition & Structure. Etymology: “ nucleo “- (“nucleus”) + – ide (chemical suffix). Purines are larger than pyrimidines because they have a two-ring structure while pyrimidines only have a single ring. Uracil is similar to thymine in terms of. DNA's genes are expressed, or manifested, through the proteins that its nucleotides produce with the help of RNA. Share the Definition of uracil on Twitter Twitter. DNA and RNA. Definition. The upp knockout mutants are unable to grow photoautotrophically, and knockdown mutants exhibit a variegated phenotype, with leaves that have chlorotic pale. Thus, it only has one ring. 087 Da. The nitrogen bases are also called nucleobases because they play a major role as building blocks of the nucleic acids deoxyribonucleic acid ( DNA) and. It is found in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. nonconformity Use the word bank to answer the question. Uracil is similar to thymine in terms of structure except for the methyl group at position 5 in the heterocyclic aromatic ring present in thymine. Etymology: The term “thymine” is derived from the Greek word “thumos,” meaning “spirit” or “soul,” due to its association with thymus glands. You'll be able to mark your mistakes quite. Have we pronounced this wrong? Teach everybody how you say it using the comments below!!Looking for help to learn English? Claim top deals on the best Englis. Chapter 11 / Lesson 9. Nucleoside Definition. Each nucleotide that makes up a nucleic acid is comprised of phosphoric acid, sugar (5-carbon), and nucleobase. Its nucleoside contains a pyrimidine base, i. RNA polymerase function. American & British English pronunciation of male & female voi. Uracil is planar and unsaturated and has the ability to absorb light. When metabolised, it becomes 5-FU. 4K . Forums. Cytosine can be distinguished from the other pyrimidines by having a keto group at position 2 and an amine group at position 4 in its heterocyclic aromatic ring. A nucleic acid base (or nucleobase) is a nitrogen heterocyclic compound, which serves as the informational monomer of ribonucleic acids (RNA) and deoxyribonucleic acids (DNA), the biopolymers responsible for the storage and transmission of genetic information. Pyrimidine (C 4 H 4 N 2; / p ɪ ˈ r ɪ. Refine your pronunciation of uracil with our free online dictionary. RNA is generally single-stranded instead of double-stranded. 115 g/mol. see more. How unique is the name Uracil? Out of 6,311,504 records in the U. Pick your prefered accent: Alex. It has a chemical formula of C 4 H 4 N 2 O 2. Unit Definition One unit is defined as the amount of enzyme that catalyzes the release of 60 pmol of uracil per minute from double-stranded, uracil-containing DNA. U (Uracil) is always inserted opposite to A (Adenine). any of a group of molecules. It is similar in structure to DNA, which carries the genes that give. g. ( A) A nucleotide (guanosine triphosphate). Find uracil similar words, uracil synonyms. Understand the definition and structure of the compound uracil. a single-stranded nucleic acid that encodes genetic information. Adenine. uracil pronunciation. ura· cil ˈyu̇r-ə-ˌsilUracil like other pyrimidines is an aromatic heterocyclic compound with a pyrimidine ring that comprises alternating nitrogen and carbon atoms. It has a pyrimidine ring structure. Purines. fluorouracil: [noun] a fluorine-containing pyrimidine base C4H3FN2O2 used as a neoplastic agent to treat some kinds of cancer. Uracil 3. Uracil - Meaning in Hindi. free vs. What is Uracil. The nitrogenous base comes under the type of pyrimidine base, which appears as a single ring structure within the backbone of ribonucleic acid where it complements pairs with the purine base adenine by two hydrogen bonds. Social Security Administration public data, the first name Uracil was not present. It can occur in nucleic acids, such as DNA. from . thymine c. This means that the 5′-phosphoric group of one nucleotide is. Uracil: Definition & Structure. Video shows what uracil means. Li and Sancar provided a comprehensive overview on. Guanine-Cytosine base pair. from . Understand the definition and structure of the compound uracil. uracil (yoor-ă-sil) n. Games. Functionality – Uracil is important in the formation and function of RNA, where it creates complementary base pairs with adenine. a pyrimidine base, C 4 H 4 N 2 O 2 , that is one of the fundamental components of RNA, in which it forms base pairs with adenine. Because the phosphate groups on a ribonucleic acid molecule carry negative charges, RNA is also electrically charged. creating new combinations of homologous chromosomes. (Wikipedia)Uracil 释义: a pyrimidine present in all living cells , usually in a combined form, as in RNA. a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine. SHABDKOSH Apps. . It under normal conditions is not seen in DNA but is present in RNA replacing thymine. Vocabulary. Cytosine ( / ˈsaɪtəˌsiːn, - ˌziːn, - ˌsɪn / [2] [3]) ( symbol C or Cyt) is one of the four nucleobases found in DNA and RNA, along with adenine, guanine, and thymine ( uracil in RNA). Although this enzyme has evolved to remove uracil from. unwinds DNA. 4K . Transcription and translation are the two processes that convert a sequence of nucleotides from DNA into a sequence of amino acids to build the desired protein. a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine. A nitrogenous base that is found in RNA, replacing the thymine of DNA. National Library of Medicine, 2021. 4K . Learn and practice the pronunciation of uracil. translation in hindi for Uracil with similar and opposite words. irritated c. This means that it has a ribose as its sugar constituent with three phosphate groups attached. For example, a chemical reaction called deamination can convert a cytosine base into uracil, a base typically found only in RNA. Transcription has three stages: initiation, elongation, and termination. A duplicated chromosome contains _____. Also see: uracil in Hindi. A ribonucleotide is a nucleotide that has a ribose as its sugar component. Nucleotide (biology definition): the fundamental building block of nucleic acid; an organic compound made up of a nitrogenous base, a sugar, and a phosphate group. uracil - WordReference English dictionary, questions, discussion and forums. A uracil is an unmethylated form of thymine. Semiconservative replication refers to. Definition: It is a long polymer. Tegafur is a chemotherapeutic prodrug of 5-fluorouracil (5-FU) used in the treatment of cancers. An RNA molecule has a backbone made of alternating phosphate groups and the sugar ribose, rather than the deoxyribose found in DNA. Thymine is an organic aromatic. Properties of Uracil. As a result, cytosine is available across both DNA and RNA, together with adenine and guanine, in DNA while only thymine is present whereas uracil is generally present instead of thymine in RNA. Cytosine base bonds with guanine via 3 hydrogen bonds in nuclei acids. Adenine ___Cytosine ___Guanine ___Uracil ___Thymine ___ arrow_forward. What is Uracil. Auxotroph refers to any microorganism that has lost the ability to synthesize an organic compound required for its growth, usually as a result of. premium. Study with Quizlet and memorize flashcards containing terms like Match each vocabulary word with the letter corresponding to its correct definition. On degradation, uracil produces substrates such as carbon dioxide. uracil (yŏŏr´əsĬl), organic base of the pyrimidine [1] family. The bases used in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T). Several pyrimidine compounds were isolated. The four bases that make up DNA and RNA are adenine, cytosine. Uracil: Definition & Structure. uracil is the translation of "Uracil" into English. Uracil: Definition & Structure. Abbr. 00:29. Three parts make up a nucleotide: A Nitrogenous base — either adenine, thymine, guanine, or cytosine. Demethylation is a chemical process in the removal of CH 3 (or a methyl group) from a molecule. Find uracil similar words, uracil synonyms. Replication creates identical DNA strands, while transcription converts DNA into messenger RNA (mRNA). Related to this Question. In a nucleic acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base. You. Depending on the number of phosphates that make up the compound, the ribonucleotide may be designated as monophosphate. Cytosine forms a component of nuclei acids in form of nucleoside or nucleotide and has a melting point of 320-325 °C. Look through examples of uracil translation in sentences, listen to pronunciation and learn grammar. How to say Fluorouracil in English? Pronunciation of Fluorouracil with 1 audio pronunciation and more for Fluorouracil. Here are 4 tips that should help you perfect your pronunciation of 'uracil': Break 'uracil' down into sounds : [YOOR] + [UH] + [SIL] - say it out loud and exaggerate the sounds until you can consistently produce them. audio files are free to play or download. haɪˈdrɒksɪl. Vad är Uracil . Definition. looted b. coli it hydrolyzes uracil-glycosidic bonds in single- or double-stranded DNA, excising uracil and creating alkali-sensitive abasic sites in the DNA. Cytosine, thymine, and uracil are pyrimidine nucleobases. DNA polymerase. Base + sugar + phosphate. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA. However, there are three main differences between DNA and RNA: RNA uses the sugar ribose instead of deoxyribose. a speech counterpart of orthographic u. [2] After transcription and following synthesis, RNA can be modified with over. For instance, uracil auxotroph, which is a yeast mutant, has inactivated its uracil synthesis pathway. Look through examples of Uracil translation in sentences, listen to pronunciation and learn grammar. A nitrogenous base (also called nucleobase) is a nitrogen-containing compound that may form a nucleoside when they are attached to a five-carbon sugar ribose or deoxyribose. n. Biomedical Pronunciation Guide. Background Detection of somatic mutations is a mandatory practice for therapeutic definition in precision oncology. DNA is the genetic material found in living organisms, all the way from single-celled bacteria to multicellular mammals like you and me. Monoisotopic mass 112. nobeastsofierce/Science Photo Library. 1 10. have an additional oxygen atom, and the base thymine. FIGURE 1. Learn the function of uracil, as well as its properties. How would you pronounce Uracil?What is uracil in English? Pronunciation, translation, synonyms, examples, rhymes, definitions of uracil in English. Definition guanine: [noun] a purine base C5H5N5O that codes genetic information in the polynucleotide chain of DNA or RNA — compare adenine, cytosine, thymine, uracil. Uracil, a colourless, crystalline organic compound of the pyrimidine family that occurs as a component of ribonucleic acid (RNA), a molecule involved in the transmission of hereditary characteristics. You can listen to the pronunciation of the word "uracil" by clicking the "play button" below. The carbon atoms in the sugar are numbered 1' through 5'. This video shows you how to say Uracil. See full answer below. Definition. 4K . Related to this Question. Origin and meaning of name Adenine. a. Unlike DNA, however, RNA is most often single-stranded. It should have Uracil replacing the Thymine as the base bonding with adenine in RNA. Polyols Citations. Chapter 11 / Lesson 9. uracil, a colourless, crystalline organic compound of the pyrimidine family that occurs as a component of ribonucleic acid ( RNA ), a molecule involved in the transmission of hereditary characteristics. Having been provided to the early Earth as a component in such asteroidal materials, these molecules might have played a role. During this process, the DNA sequence of a gene is copied into RNA. One of the bases of RNA. The nucleotide sequence of RNA, which is complementary to the DNA sequence, allows RNA to encode genetic information. There are three major types of RNA involved in this process: (1) messenger RNA (mRNA), (2) transfer RNA (tRNA), and (3) ribosomal RNA (rRNA). Most methylated nucleotides are in the coding district of DNA minimal in the advertiser area. creating new combinations of alleles. However, there seems to be some confusion about the correct spelling and pronunciation of this key molecule. Uracil: Definition & Structure. Activity is measured by release of [3 H]-uracil in a 50 μl Standard Taq Reaction Buffer containing 0. A. US English. Both uridine and uracil are essential components of RNA. Chapter 11 / Lesson 9. Browse the use examples 'uracil nucleotide' in the great English corpus. A Sugar — either ribose (in RNA. Look through examples of uracil translation in sentences, listen to pronunciation and learn grammar. Les pyrimidines possèdent un cycle azoté hexagonal comprenant quatre atomes de carbone et deux d' azote. Uracil-DNA Detection Methods. American & British English pronunciation of male & female voi. U A pyrimidine base, C4H4N2O2, that is an essential constituent of RNA. Definition. The bases combine with the sugar to make the nucleotides adenosine, guanosine, cytidine, thymidine, and uridine. Uridine is a nucleoside, whereas uracil is a standalone nucleobase. Guanine ( / ˈɡwɑːnɪn / ⓘ) ( symbol G or Gua) is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine ( uracil in RNA). The others are adenine, guanine, and cytosine. Definition. Definition Definition A complex molecule that makes up a fundamental unit of a DNA or RNA molecule. General Structure of Pyrimidine Class. You'll be able to mark your mistakes quite. How to say uracil mustard in English? Pronunciation of uracil mustard with 1 audio pronunciation, 1 meaning, 11 translations and more for uracil mustard. ura· cil ˈyu̇r-ə-ˌsil, -səl. Some viruses use RNA, not DNA, as their. Uracil is represented by the letter U in RNA and is a pyrimidine. helicase. from . Learn the function of uracil, as well as its properties. The ribose sugar of RNA is a cyclical structure consisting of five carbons and one oxygen. Definition. Int deoxyUridine. The name of the base is generally used as the name of the nucleotide, although this is technically incorrect. Uracil-ftorafur is a combination of tegafur, an oral prodrug of fluorouracil, and uracil in a 1:4 molar ratio. It pairs with the adenine through hydrogen bonds. Uracil definition: a pyrimidine base, C4H4N2O2, that is one of the fundamental components of RNA, in which it forms base pairs with adenine. . Thymine is one of the four nitrogenous nucleobases that form the basic building blocks of deoxyribonucleic acid (DNA). Uracil is a pyrimidine nucleobase with a chemical formula of C 4 H 4 N 2 O 2. Guanine is defined as one of the four main bases in nucleic acids. com member to unlock this answer! Create your account. RNA contains the nucleotides adenine, guanine, cytosine and uracil (U). Learn how to say Uracil with EmmaSaying free pronunciation tutorials. This video shows pronunciation of uracil in a sentence, uracil meaning, uracil definition, uracil phonetic, uracil synonym and uracil exampleuracil Definitio. . uracil is the translation of "Uracil" into English. They consist of a six-membered ring with two nitrogen atoms and four carbon atoms, but instead of being an aromatic ring with alternating double and single bonds they all have a ketone (carbonyl group) on the 2′ carbon atom (the carbon between the two. Guanine (G) is one of the four nucleotide bases in DNA, with the other three being adenine (A), cytosine (C) and thymine (T). [2]uracil: [ u´rah-sil ] a pyrimidine base found in ribonucleic acid (RNA). Hence, compared to DNA, RNA molecules are relatively small. uracil noun. Uracil är en av pyrimidinbaserna som endast finns i RNA. Fun Facts about the name Uracil. Understand the definition and structure of the compound uracil. It is referred to as a pyrimidine, along with cytosine and thymine. uracil. A simple adenine definition is a chemical compound used to make the nucleotide building blocks of DNA and RNA as well as substances that store and provide energy for cells. Learn how to say Uracil in English correctly with TextToSpeech. Uracil pronunciation in Australian English Uracil pronunciation in American English Uracil pronunciation in American English Take your English pronunciation to the next level with this audio dictionary references of the word uracil. Adenine and guanine are fused five - and six-membered purines, while cytosine and thymine are six-membered rings called uracil (U), replaces thymine in RNA. Uracil (U): Uracil is a weak acid with the chemical compound C 4 H 4 N 2 O 2. US English. Each nucleotide that makes up a nucleic acid is comprised of phosphoric acid, sugar (5-carbon), and nucleobase. The repeating, or monomer, units that are linked together to form nucleic acids are known as nucleotides. L'uracile est une base azotée de type pyrimidine comme la thymine et la cytosine. or. US English. Understand the definition and structure of the compound uracil. It has a role as an antithyroid drug and a metabolite. Definition. Chapter 11 / Lesson 9. A and G are categorized as purines, and C, T, and U are called pyrimidines. - A base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine. Cytosine 2. The basic property derives from the lone electron pair on the nitrogen atom. DNA is the genetic material found in all living organisms, ranging from single-celled bacteria to multicellular mammals. Forums. Uracil has a molar mass of 112. Within a double-stranded DNA molecule, thymine bases on one strand pair with adenine bases on the opposite strand. Definition and meaning can be found here:video shows you how to pronounce UracilUracil definition: a pyrimidine base, C4H4N2O2, that is one of the fundamental components of RNA, in which it forms base pairs with adenine. Define uracil. 1: (a) Ribonucleotides contain the pentose sugar ribose instead of the deoxyribose found in deoxyribonucleotides. 2: DNA Replication. What is definition of uracil? Listen to pronunciation. Tags for the entry "uracil" What uracil means in Tamil, uracil meaning in Tamil, uracil definition, explanation, pronunciations and examples of uracil in Tamil. Uracil Structure. Ribonucleic acid (RNA) is a molecule that is present in the majority of living organisms and viruses. irritated c. Term. Victoria. The structure of uracil can be described as. A nitrogenous base is an organic molecule that contains the element nitrogen and acts as a base in chemical reactions. 1. The five bases are adenine, guanine, cytosine, thymine, and uracil, which have the symbols A, G, C, T, and U, respectively. This means that it has a ribose as its sugar constituent with one phosphate group attached. Heterocyclic compounds are stable, ring-shaped compounds in which not. The word or phrase uracil refers to a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine. Start Free Trial. A nucleotide is a nucleoside with one or more phosphate groups. Pseudouridine (abbreviated by the Greek letter psi- Ψ) [1] is an isomer of the nucleoside uridine in which the uracil is attached via a carbon-carbon instead of a nitrogen-carbon glycosidic bond . However, while RNA is transcribed using only these four bases, they are. Vocabulary. 2. In RNA, uracil binds to adenine via two hydrogen bonds. S. (GW776/5-Fluorouracil Combination Tablet, NCI Thesaurus) It is a type of uracil analog. Pyrimidine bases are weakly basic. uracil attached to the ribose sugar. 2. 00:00. What does the word uracil mean? Find and lookup the definition, synonyms, and antonyms of the word uracil in our free online dictionary!The Learning Objective of this Module is to identify the different molecules that combine to form nucleotides. Answer and Explanation: 1. A uracil-based nucleotide is called uridine. Vad är skillnaden mellan Uracil och Thymine. a sugar that is a constituent of nucleic acids. It was isolated from herring sperm and also produced in a laboratory in 1900–1901. Uracil-DNA glycosylase (UDG) is a highly conserved repair enzyme that catalyzes the excision of uracil from uracil-containing single- and double-stranded DNA 1,2,3,4,5,6,7. Difficult (1 votes) Spell and check your pronunciation of uracil. Molecular Formula. Chapter 11 / Lesson 9. In DNA and RNA, cytosine. io free pronunciation tutorials. With the help of enzyme uracil glycosylase such defects in DNA can be. Structure. Pronunciation [edit] IPA : /ˈjʊərəsɪl/ Noun [edit] uracil (countable and uncountable, plural uracils) (organic chemistry) One of the bases of RNA, pairing with. урацил is the translation of "uracil" into Serbian. Uracil was identified in the sample returned from the asteroid Ryugu. 2. Hydrogen bonds form between adenine and uracil, guanine and cytosine, and also guanine and uracil. a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine. Learn the definition of 'uracil nucleotide'. Like the UNG from E. Uracil definition, n. Definition of nucleotide. The base can be removed by the enzyme uracil-N-deglycosylase (UNG) which renders the oligo susceptible to strand scission. There are two types of nucleic acids in biology: DNA and RNA. The four different mutations observed in the three patients were located in the catalytic domain shared by both UNG isoforms (mitochondrial UNG1 and nuclear UNG2). The nitrogenous bases can be divided into two categories: purines and pyrimidines. The map shown above gives the frequency of use of the term «uracil» in the different countries. Uridine triphosphate (UTP) is a nucleoside phosphate in being comprised of a ribonucleoside and three phosphate groups. uracil attached to the ribose sugar. Definition English: A uracil nucleotide containing a pyrophosphate group esterified to C5 of the sugar moiety. All nucleic acids contain the bases A, C, and G; T, however, is found only in DNA, while U is found in RNA. Also see: uracil in Hindi. In nucleic acids, it. The carbon (C) and nitrogen (N) atoms are bonded by single and double bonds altering each other. The three pyrimidine nitrogenous bases, thymine (T), cytosine (C), and uracil (U), are modified forms of the aromatic compound pyrimidine. WikiMatrix Magkakaiba rin ang mga posibleng nitrohenong beis na makikita sa dalawang klase ng asido nukleiko: adenine, cytosine, at guanine ay posible sa RNA at DNA, subalit ang thymine ay posible lamang sa DNA at ang uracil ay posible. Julia.