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
Capital and income breeding of season, it is predicted that capital breeding will be more prevalent, as the time when the organism is not breeding but when conditions are still favourable will be dedicated to rebuilding stores, therefore allowing them to achieve higher rates of reproduction. Capital breeding also increases with size (at least in organisms with optimal storage and indeterminate growth), as the energy dedicated to growth gives less and less return, thus meaning that energy dedicated to storage will have more return compared to that dedicated to growth. But, in eastern grey kangaroos, capital breeding is used during times of food scarcity,