Dirty condenser coils, evaporator fan motor failure or a defective start relay switch are common freezer problems that cause the freezer to malfunction or not freeze. Frosted-over evaporator coils, a...
A pedigree is a table or chart recording a line of ancestors , either of persons or ( more especially ) of animals , as horses , cattle , and dogs ; in the case of animals , such a table is used as proof of superior qualities : a detailed pedigree.A genealogy is an account of the descent of a person or family traced through a series of generations , ...
n. 1  A gene, DNA sequence, or gene product whose inheritance can be traced through a pedigree or phylogeny. Genetic markers are used in paternity testing, studies of evolution, and evaluating genetic contributions to phenotypes including disease.