Which prevents the fac genes in the dna of e. coli from being expressed most of the time?
the lac repressor
the lac operator
the lac promoter
the lac locator

dude i stopped reading after the first 7 words but hey you seem real smart thats awesome have a great day

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

b. read the phase at the intersection of any given temperature and pressure.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: