Sarah is a scientist looking at specific sequences of base pairs on a DNA molecule within a specific cell. Which of the following pairings would she most likely observe in this DNA molecule?
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Q: Whose research suggested that DNA was helical?
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- Type the matching bases in each DNA sequence. G A T A G C T A G GImagine you have three test tubes containing identicalsolutions of purified, double-stranded human DNA.You expose the DNA in tube 1 to an agent that breaksthe sugar-phosphate (phosphodiester) bonds. Youexpose the DNA in tube 2 to an agent that breaks thebonds that attach the bases to the sugars. You exposethe DNA in tube 3 to an agent that breaks the hydrogen bonds. After treatment, how would the structuresof the molecules in the three tubes differ?By average, how many Sau3A (5’GATC3’) sites are there in a 10 kd DNA molecule? (1/4)^6 * 10,000 = 2.44140625 => 2.4 For the above 10 kb DNA, if you use Sau3A to do a complete digestion, you will only get a lot of small fragments ( 200~500 base pairs). What should I do if I want to get larger digested fragments (say 3 to 5 kb) Please answer asap and type your answer and do not copy from anywhere please
- What describes or designates the 3' end of a DNA strand? a. an available hydroxyl group on the 5th carbon of a deoxyribose of a terminal nucleotide b. an available phosphate group on the 3rd carbon of a deoxyribose of a terminal nucleotide c. an available hydroxyl group on the 3rd carbon of a deoxyribose of a terminal nucleotide d. an available hydroxyl group on the 2nd carbon of a deoxyribose of a terminal nucleotideSuppose the following base sequence was found in a segment of one strand of a DNA molecule: 3’ A-A-T-A-C-C-T-C-C-T-A-A-C-T 5’ What would be the bases in the complementary strand? Label the 3’ and the 5’ ends. Illustrate the DNA molecule below. Label the 3’ and the 5’ ends of both strands. Separate the above DNA molecule up to the seventh base. Add one primer for the leading strand complementary to the first base Adenine of the template strand. Add one primer for the lagging strand complementary to the seventh base Adenine of the template strand. Illustrate the DNA molecule. Label the 3’ and 5’ ends. Elongate the new strands up the seventh base by adding DNA bases complementary to the template strand. Illustrate the resulting DNA molecule. Label the 3’ and the 5’ ends of the template strands and the complementary strands. Elongate the new strands up the seventh base by adding DNA bases complementary to the template strand. Illustrate the resulting DNA molecule. Label the 3’ and the 5’…The two complementary strands of the DNA double helix are held to each other by (a) ionic bonds between deoxyribose molecules (b) ionic bonds between phosphate groups (c) covalent bonds between nucleotide bases (d) covalent bonds between deoxyribose molecules (e) hydrogen bondsbetween nucleotide bases
- Which of the following single stranded DNA oligonucleotides alone would be expected to spontaneously form linear double stranded DNA molecules? A) 5'-ACGTTGCA-3' B) 5'-GGGGGGGC-3' C) 3'-GTCCCTAT-5 D) 3-CTAATTAG-5' asap pleaseWhich of the following regions of a genome would be most likely to be a SINGLE CRE? A. A section of DNA that is 10 base pairs long B. A section of DNA that is 50 base pairs long C. A section of DNA that is 200 base pairs long D. A section of DNA that is 1500 base pairs longWrite the sequence of the complementary DNA strand thatpairs with each of the following DNA base sequences:(a) GGTTAC(b) CCCGAA
- The compound known as nitrous acid is a reactive chemical that replaces amino groups (NH2) with keto groups (=O). When nitrous acid reacts with the bases in DNA, it can change cytosine to uracil and change adenine to hypoxanthine. A DNA double helix has the following sequence: AACCTACGACC TTGGATGCTGG A. What would be the sequence of this double helix immediately after reaction with the nitrous acid (i.e. before replication)? Let the letter H represent hypoxanthine and U represent uracil. B. Following exposure the nitrous acid was removed, and the DNA was replicated for one generation. What would be the sequence of the DNA products after the DNA sequence resulting from treatment in Part A had replicated once? Your answer should contain the sequences of two double stranded DNA molecules. Note: During DNA replication, uracil hydrogen bonds with adenine, and hypoxanthine hydrogen bonds with cytosine.If the following piece of the partially double stranded DNA: 5' ATCG 3' 3' TAGCGGCATCCG 5' and add DNA polymerase, dTTP,dGTP and dCTP, what will be the sequence of the nucleotides that will be added? A. 5' ATCGCCGTAGGC 3' B 5' GGCATCCG 3' C. 5' CCGT 3' D 5'CCGTAGGC 3' E 5'GGC 3'If 30% of the bases in a DNA sequence are G, what percentage of bases would you expect to be A? 20% 30% 35% None of the above