A mutation in a single nucleotide of human DNA leads to sickle-cell anemia. The normal gene includes the nucleotide sequence GAG. A mutation occurs in which the middle nucleotide changes from adenine to thymine, making the new sequence GTG. Identify what kind of mutation this is and explain how this mutation affects the final protein.

The rate at which molecules water and oxygen can enter a cell is determined by the-

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

You want to cultivate some exotic plants at your farm. however, the climate is chillier than the temperature range favorable to the crop. which is the best method to use for the cultivation of this exotic crop? a. use a crop rotation method b. use a lot of fertilizer c. prepare the seed bed properly d. use a greenhouse e. use irrigation