When cpg islands are unmethylated,
a) chromatin in the promoter region is open, allowing access by transcription factors and rna polymerase
b) chromatin in the promoter region is closed, preventing transcription factors and rna polymerase from binding
c) chromatin in the enhancer region is closed, so they are unable to bind regulatory proteins to initiate transcription
d) dnase hypersensitivity in that region of the chromosome is lost
e) genes downstream of the cpg islands cannot be expressed, because the promoter region is blocked by histones

Apopulation of rabbits live in a local forest. some had a mutation for a large body and long legs. the graph below shows the number of both the mutant and the normal rabbits over 5 generations. which of the following statements is true for this scenario? question 7 options: the rabbits with the mutation were more successful with restricted food than the normal rabbits. both sets of rabbits were equally successful with the restricted food source. i the normal rabbits were more successful with restricted food than the rabbits with the mutation. the graph does not let us know which rabbit was more successful.

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water

"your temperature analysis reveals a pattern with coldest temperatures located to the portion of the map."