Scientists hypothesized that E. coli contained one operon. After further experimentation, they discovered that, in fact, E. coli contained two operons. Using this information, answer the questions provided What is one way scientists are able to study operons in organisms?
by studying the number and organization of operons by reading the genome sequence
by counting the operons during cell division
by studying the operon controls during translation when proteins are constructed

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.