Malus sylvestris to most European countries. It occurs in a scattered distribution pattern as single individuals or in small groups. In the past "M. sylvestris" was thought to be the most important ancestor of the cultivated apple ("M. pumila"), which has since been shown to have been originally derived from the central Asian species "M. sieversii". However another recent DNA analysis confirms that "M. sylvestris" has contributed significantly to the genome. The study found that secondary introgression from other species of the genus "Malus" has greatly shaped the genome of "M. pumila", with "M. sylvestris" being the largest secondary contributor. It also
Oxford Scientific Films and factual entertainment shows." Some time later, Oxford Scientific Films became part of the Twofour Group, which was acquired on 24 June 2015 by ITV Studios. Oxford Scientific Films has produced numerous award-winning programmes and films. In 1998, its film "The Forbidden Fruit" produced for the BBC's long-running series "The Natural World" and WNET Nature, won seven industry awards. "Heroes of the High Frontier", produced as a National Geographic Special, won four awards and was a finalist for the Best of the Show Grand Award Trophy at the New York Festivals. In 2005, the company launched "Meerkat Manor", a docu-drama