Falling into a pit, setting his chamber on fire, and the pendulum.
In this building, Marshall Nirenberg and Heinrich Matthaei discovered the key to breaking the ordering after they conducted an experiment employing an artificial ribonucleic acid chain of multiple units of U to instruct a sequence of amino acids to feature essential amino acids.
Nirenberg and Matthaei created an artificial ribonucleic acid molecule outside the microorganism and introduced this ribonucleic acid to E. coli. They found that their artificial ribonucleic acid such as that essential amino acid, an organic compound, is another to the tip of a growing strand of connected amino acids, the precursor to proteins.
In 1961 Marshall Nirenberg, a young chemist at the National Institute of rheumatic and Metabolic Diseases discovered the primary "triplet"—a sequence of 3 bases of DNA that codes for one in every one of the twenty amino acids that function as the building blocks of proteins.
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I think possibly number two is the second answer but maybe you could also show the actual story too
The complete prepositional phrase in the sentence stated above is "in the door's key hole". As the name suggests, this type of phrase is introduced by prepositions which in this case is with the use of preposition "in". It answers the question "where" which refers to the location of the object it modifies.
Answer:
A main idea is supported, explained, or expanded on with supporting ideas.
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