Answer:
A mutation is the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes. Mutations in sex cells are more serious because they are heritable and affect the next generation.
Explanation:
The answer is C. Organelles
Gelisols are high latitude soils containing permafrost and large amounts of organic matter. ]
Gelisols are soils that are permanently frozen or contain evidence of permafrost near the soil surface. They are found in the Arctic and Antarctic, as well as at extremely high elevations. Additionally they are also found at extremely high elevations in the lower latitudes.
I believe the answer is B