Obviously, the same problem extends into all other aspects of lodging with companion(s). Just as common is traveler's diarrhea, because it disrupts stools and leads to the inevitable constipation; Cause-and-effect: Most people believe traveler's diarrhea is caused by contaminated food or water.
variation in a characteristic that is a result of genetic inheritance from the parents is called inherited variation children usually look a little like their father and a little like their mother but they will not be identical to either of their parents
1 It recognizes that characteristics are inherited as discrete entities called genes. Variation within a population is due to the presence of multiple alleles of a gene.  It postulates that speciation is (usually) due to the gradual accumulation of small genetic changes.