if a strand of DNA contains 24% adenine how much guanine is present?
78937
A matches with T, G with C.  So the A and T % are the same, meaning there is 24% T.  This leaves52% as either G or C.  Since these two are complementary, half the ramining 52% must be guanine, or 26%.
1098660
Your question isn't easy to read, but i think i understand it enough. There is one mole of 1kbp DNA strand with an EcoR1 restriction site in the middle. The amount of 5'ends produced when you addd EcoR1 to the DNA will be double because you will be effectively cutting the DNA in half. I hope this is what you were asking
62320
well, hope these help:\n\nhttp://www.bbc.co.uk/dna/h2g2/A388217\n\nhttp://www.chemistrysurvival.com/
1021924
Yes, DNA is a polymer composed of four different nucleotides. The nucleotides are composed of phosphate and the sugar 2' deoxyribose, which make up the backbone of a molecule of DNA, and one of four nitrogenous bases: adenine (A), guanine (G), thymine (T), and cytosine (C). Bases on opposite DNA strands can form hydrogen bonds (A with T, and G with C), which hold the double-stranded molecule together. Polymerization of DNA occurs through the enzyme DNA polymerase, which catalyzes the synthesis of one of the DNA strands using the other strand as a template.
905906
It takes three bases of DNA to make one codon.  So it would take three phosphates, three sugars and three of C,T,G,A.  Google DNA Codon table if you want to encode a codon for a specific amino acid.
225344
while this sounds an awful lot like a homework question, I will at least give you a hint.\n\nUse the complementary base pairing rules.....  Adenine should be the same percentage as its partner, the other two should also be the same percentage as each other.  \n\nHope that helps
916476
Nucleic acids are acidic macromolecules found in the nucleus of a cell. They are DNA and RNA. The monomer of a nucleic acid is a nucleotide. It consists of a sugar (ribose for RNA or beoxyribose for DNA) a phosphate and a base. The four possible bases are (for DNA): Adenine, Guaniner, Cytosine, and Thymine. In RNA Thymine is replaced with Uracil, and the other 3 remain the same. Because there are four types of bases, there are four types of nucleotides.Since the phosphate and the sugar and constant, they are the backbone of a nucleotide. When nucleotides bond to form a long chain (a polynucleotide), the chain is a strand of DNA (which is double-stranded) or RNA (single-stranded). \nHope this helps ;-)
845644
The phosphate in the backbone is the same. The difference (other than uracil in RNA and thyamine in DNA) is the sugar group. RNA has ribose, while DNA has deoxyribose. Deoxyribose has one less hydroxyl group.
68369
Although sometimes called "the molecule of heredity", DNA macromolecules as people typically think of them are not single molecules. Rather, they are pairs of molecules, which entwine like vines to form a double helix (see the illustration at the right).\n\nEach vine-like molecule is a strand of DNA: a chemically linked chain of nucleotides, each of which consists of a sugar (deoxyribose), a phosphate and one of five kinds of nucleobases ("bases"). Because DNA strands are composed of these nucleotide subunits, they are polymers.\n\nThe diversity of the bases means that there are five kinds of nucleotides, which are commonly referred to by the identity of their bases. These are adenine (A), thymine (T), uracil (U), cytosine (C), and guanine (G). U is rarely found in DNA except as a result of chemical degradation of C, but in some viruses, notably PBS1 phage DNA, U completely replaces the usual T in its DNA. Similarly, RNA usually contains U in place of T, but in certain RNAs such as transfer RNA, T is always found in some positions. Thus, the only true difference between DNA and RNA is the sugar, 2-deoxyribose in DNA and ribose in RNA.\n\nIn a DNA double helix, two polynucleotide strands can associate through the hydrophobic effect and pi stacking. Specificity of which strands stay associated is determined by complementary pairing. Each base forms hydrogen bonds readily to only one other -- A to T and C to G -- so that the identity of the base on one strand dictates the strength of the association; the more complementary bases exist, the stronger and longer-lasting the association.\n\nThe cell's machinery is capable of melting or disassociating a DNA double helix, and using each DNA strand as a template for synthesizing a new strand which is nearly identical to the previous strand. Errors that occur in the synthesis are known as mutations. The process known as PCR (polymerase chain reaction) mimics this process in vitro in a nonliving system.\n\nBecause pairing causes the nucleotide bases to face the helical axis, the sugar and phosphate groups of the nucleotides run along the outside; the two chains they form are sometimes called the "backbones" of the helix. In fact, it is chemical bonds between the phosphates and the sugars that link one nucleotide to the next in the DNA strand.
1136356
Deoxyribonucleic acid (DNA) is a nucleic acid —usually in the form of a double helix— that contains the genetic instructions specifying the biological development of all cellular forms of life, and most viruses. DNA is a long polymer of nucleotides (a polynucleotide) and encodes the sequence of the amino acid residues in proteins using the genetic code, a triplet code of nucleotides.\nIn complex eukaryotic cells such as those from plants, animals, fungi and protists, most of the DNA is located in the cell nucleus. By contrast, in simpler cells called prokaryotes, including the eubacteria and archaea, DNA is not separated from the cytoplasm by a nuclear envelope. The cellular organelles known as chloroplasts and mitochondria also carry DNA.\nDNA is often referred to as the molecule of heredity as it is responsible for the genetic propagation of most inherited traits. In humans, these traits can range from hair colour to disease susceptibility. During cell division, DNA is replicated and can be transmitted to offspring during reproduction. Lineage studies can be done based on the facts that the mitochondrial DNA only comes from the mother, and the male Y chromosome only comes from the father.\nEvery person's DNA, their genome, is inherited from both parents. The mother's mitochondrial DNA together with twenty-three chromosomes from each parent combine to form the genome of a zygote, the fertilized egg. As a result, with certain exceptions such as red blood cells, most human cells contain 23 pairs of chromosomes, together with mitochondrial DNA inherited from the mother.\n\nMolecular structure:\nAlthough sometimes called "the molecule of heredity", DNA macromolecules as people typically think of them are not single molecules. Rather, they are pairs of molecules, which entwine like vines to form a double helix (see the illustration at the right).\nEach vine-like molecule is a strand of DNA: a chemically linked chain of nucleotides, each of which consists of a sugar (deoxyribose), a phosphate and one of five kinds of nucleobases ("bases"). Because DNA strands are composed of these nucleotide subunits, they are polymers.\nThe diversity of the bases means that there are five kinds of nucleotides, which are commonly referred to by the identity of their bases. These are adenine (A), thymine (T), uracil (U), cytosine (C), and guanine (G). U is rarely found in DNA except as a result of chemical degradation of C, but in some viruses, notably PBS1 phage DNA, U completely replaces the usual T in its DNA. Similarly, RNA usually contains U in place of T, but in certain RNAs such as transfer RNA, T is always found in some positions. Thus, the only true difference between DNA and RNA is the sugar, 2-deoxyribose in DNA and ribose in RNA.\nIn a DNA double helix, two polynucleotide strands can associate through the hydrophobic effect and pi stacking. Specificity of which strands stay associated is determined by complementary pairing. Each base forms hydrogen bonds readily to only one other, A to T forming two hydrogen bonds and C to G forming three hydrogen bonds. The GC content and length of each DNA molcule dictates the strength of the association; the more complementary bases exist, the stronger and longer-lasting the association characterised by the temperate required to break the hydrogen bonding, its Tm value.\nThe cell's machinery is capable of melting or disassociating a DNA double helix, and using each DNA strand as a template for synthesizing a new strand which is nearly identical to the previous strand. Errors that occur in the synthesis are known as mutations. The process known as PCR (polymerase chain reaction) mimics this process in vitro in a nonliving system.\nBecause pairing causes the nucleotide bases to face the helical axis, the sugar and phosphate groups of the nucleotides run along the outside; the two chains they form are sometimes called the "backbones" of the helix. In fact, it
920557
Thymine pairs with Guanine.\nCytosine pairs with Adenine.\n\nThus, the complementary strand would be GGATCGA.
898170
72 from above+3Termination codon=75!
833446
a series of base nucleotides connected to each other in pairs twisted into a long spiral. Adenosine, Guanine, Thymine and Cytosine are what seperate one nucleeotide from another. Also Methy groups are often added to the end of some nucleutides, which often indicate which sections of dna not to code into genes.
566846
The function of DNA is to code for proteins, and as a store of information that can be easily and meticulously reproduced.\n\nDNA is found in the nucleus in eukaryotic cells, and in plasmids/free in the cytoplasm in prokaryotes.\n\nDNA has 4 nitrogen bases: adenine, guanine, cytosine and thymine\n\nthey bond through hydrogen bonds
1042691
Each amino acid is coded for by a 3-nucleotide codon.  So the mRNA would need at least 450 nucleotides.\n\nBut real mRNA often has extra nucleotides at the beginning or the end that aren't translated into protein.  Sometimes, they are functional (for instance, Iron-Response elements, or IREs tie the translation of that mRNA to iron levels in the cell), sometimes, they aren't.  \n\nLikewise, with DNA you would need at least 450 DNA base pairs, but realistically, there are promotors, or other DNA sequences that don't code for protein, but control when the mRNA is or isn't made, depending on the situation.  Most eukaryotes also have introns, as sometimes, different splice variants are called for in different situations.
43181
GGATCGA\n\nGuanine pairs with adonine and cytosine pairs with thymine.
205231
DNA has four bases, the ones you are referring to as chemicals. The names of these bases are Adenine (A), Thymine (T), Cytosine (C) and Guanine (G). In RNA all these bases are also present except T where it is replaced by Uracil (U). So when information is copied from DNA to RNA (mRNA specifically) C pairs with G, G pairs with C, T pairs with A and A pairs with U (since there is no T but U in RNA).\n\nBesides that the chemical composition of DNA (Deoxyribonucleic Acid) is a Phosphate group, a base(the four bases) and a sugar (Deoxyribose). These three parts together form a nucleotide. A nucleotide without a phosphate group is called a nucleoside. The 'chemicals' you are looking for are Adenine, Thymine, Cytosine and Guanine.