The functional unit of DNA that carries genetic information is called (a) chromosome
(b) nucleosome
(c) genes
(d) chromatin

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.

Would really appreciate it, i have an idea but not completely sure

What are genotypes? what are phenotypes?