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If a DNA double helix contains 28% T
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- One DNA chain of a DNA double helix contains 18% A, 35% T, 28% C, and 21% G. What is the composition of the complementary DNA chain?If the GC content of a DNA molecule is 60%, what are the molar percentages of the four bases (G, C, T, A)?What is the average number of nucleotide pairs per micrometer of DNA?
- If the G+C content of a sample of DNA is 46%, what are the proportions of all four nucleotides?In a segment of DNA consisting of 1000 nitrogen bases, 28% of which are thymine, how many bases are adenine, guanine, and cytosine?If a DNA double helix that is 100 base pairs in length has32 adenines, how many cytosines, guanines, and thymines must it have?
- If the ratio (A+G)/(T+ C) in one strand of DNA is 0.3, what is the same ratio in the complementary strand?If one strand of DNA has the sequence A-A-C-T-G-T-G, what will be the nucleotide sequence of the complementary strand?Write the sequence of the complementary DNA strand thatpairs with each of the following DNA base sequences:(a) GGTTAC(b) CCCGAA
- What is meant by the statement “DNA strands areantiparallel”?DRAW A DNA STRAND WITH 10 ADENINE BASES FOLLOWED BY 10 CYTOSINE BASES. IF THAT SAME STRAND BONDED TO A STRAND OF 15 THYMINE BASE AND 5 GUANINE BASES, HOW WOULD THE DOUBLE HELIC SHAPE VARY FROM A TYPICAL DNA DOUBLE HELIX?A) Draw the structure and give the name of a nucleotide made of G + ribose. B) Write the complementary base sequence for the matching strand in the DNA section shown below.5’ – C T G T A T A C G T T A – 3’ Please answer both parts