Breeding of strawberries variety "Old Black", which is of uncertain origin. This variety was created by pollination, not direct manipulation of the plant's genes. Molecular breeding is the application of molecular biology tools in a breeding program. Genetic engineering is typically defined as the introduction of non-native genes into an organism. An excellent example of transgenic modification is in the case of cold resistant strawberries. In one particular variety genes from the arctic flounder, a fish that lives in very cold water, were used to give plants resistance to cold. This modification works because of the genetics of the arctic flounder. It lives
Preservation breeding Preservation breeding Preservation breeding is an attempt by many animal breeders to preserve bloodlines of animals, either of a rare breed, or of rare pedigrees within a breed. One purpose of preservation breeding is to protect genetic diversity within a species, another is to preserve valuable genetic traits that may not be popular or in fashion in the present, but may be of great value in the future. Preservation breeding can also mean the breeding of animals to populate or repopulate an area where a species previously existed. It can also mean the breeding of species that are healthy and