Explanation:
Russian-American biochemist Phoebus Levene (1869-1940), who had discovered ribose sugar in 1909 and deoxyribose sugar in 1929, suggested the structure of nucleic acid as a repeating tetramer. He called the phosphate - sugar - base unit a nucleotide.
Answer:
UAG, UAA, and UGA are the three STOP codons.
It will increase (A).
When the distance between two masses becomes lower, the gravitational pull by them on each other will increase.
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