Most eukaryotic genes are normally inactive and require positive regulation. Determine whether the situations described are associated with positive regulation (activation) or negative regulation of eukaryotic genes. If one of the choices is not a factor involved in regulating transcription or if a choice does not apply.

a. Susceptible to DNase
b. transactivator interacts with histone acetyltransferases (HATs)
c. mediator detaches from RNA polymerase II
d. coactivator bond to DNA
e. euchromatin
f. increased histone deacetylase activity

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.

  a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set