A primitive eukaryote was discovered that displayed a unique nucleic acid as its

Question

A primitive eukaryote was discovered that displayed a unique nucleic acid as its genetic material. Analysis provided the following information: (a) The general X-ray diffraction pattern is similar to that of DNA but with somewhat different dimensions and more irregularity. (b) A major hyperchromic shift is evident upon heating and monitoring UV absorption at 260 nm. (c) Base-composition analysis reveals four bases in the following proportions. Note that xanthine and hypoxanthine are both purines. (d) About 75 percent of the sugars are deoxyribose, while 25 percent are ribose.

Part A Based on these findings, which characteristics does this unique nucleic acid have? Select all that apply. Based on these findings, which characteristics does this unique nucleic acid have? Select all that apply.

possibly more strands than DNA

purine-pyrimidine base pairing

purine-purine base pairing

more flexibility than DNA; possible kinking or bending

pyrimidine-pyrimidine base pairing

helical structure

hydrogen bonding between base pairs

A primitive eukaryote was discovered that displayed a unique nucleic acid as its genetic material. Analysis provided the following information: (a) The general X-ray diffraction pattern is similar to that of DNA but with somewhat different dimensions and more irregularity. (b) A major hyperchromic shift is evident upon heating and monitoring UV absorption at 260 nm. (c) Base-composition analysis reveals four bases in the following proportions. Note that xanthine and hypoxanthine are both purines. (d) About 75 percent of the sugars are deoxyribose, while 25 percent are ribose. Part A Based on these findings, which characteristics does this unique nucleic acid have? Select all that apply. Based on these findings, which characteristics does this unique nucleic acid have? Select all that apply. possibly more strands than DNA purine-pyrimidine base pairing purine-purine base pairing more flexibility than DNA; possible kinking or bending pyrimidine-pyrimidine base pairing helical structure hydrogen bonding between base pairs

Explanation / Answer

Purine purine base pairing. Helical structure. Hydrogen bonding between base pairs.

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