Not all portions of DNA that are copied into mRNA are actually used to make protein. Instead, during RNA , a portion of the nucleotides are removed through RNA. . These removed portions are known as While the portions that remain are known as.

what subject is this

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

the answer is d.) homologous; have mammary glands

radon is correct hope this