1 the set of exogenic (physical, chemical and biological) processes that alter the physical and chemical state of rocks at or near the earth's surface.  intensity of most weathering decreases with depth, because variations in temperature and moistures decrease with depth.
A gene is a segment of nucleic acid that contains the information necessary to produce a functional product, usually a protein. Genes consist of a long strand of DNA (RNA in some viruses) that contains a promoter, which controls the activity of a gene, and a coding sequence, which determines what the gene produces.
Genetic Information. The main job of DNA is to carry the code for making proteins. A gene is a stretch of DNA that can be read by proteins called ribosomes, and copied into a type of nucleic acid called messenger RNA (mRNA).The mRNA then carries this information to a protein machine that reads the information in mRNA and makes proteins.enetic Information. The main job of DNA is to carry the code for making proteins. A gene is a stretch of DNA that can be read by proteins called ribosomes, and copied into a type of nucleic acid called messenger RNA (mRNA).