You hold two refrigerator magnets and push them toward each other.

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry