Not all of the human genome codes for proteins. Which of the following characteristics describes about 50 percent of the human genome?
A genes that code for proteins
B sequences that regulate genes that code for proteins
C genes that code for RNA molecules
D highly repetitive sequences
E imprinted sequences

Clara wrote the following hypothesis for an experiment about acidophilic bacteria. bacteria cells will stop dividing in a basic (alkaline) environment because of the high ph. which statement is the best way to restate the hypothesis so that it is more specific? growing acidophilic bacteria in some environments will cause the cells to stop dividing because of ph. if the ph of their environment is changed, acidophilic bacterial cell division will be affected. if the environment of acidophilic bacterial cells becomes alkaline, the bacteria will stop dividing. the more alkaline an environment, the less cell division will occur in bacteria.