Gala (apple) total volume of the commercial production of eating apples grown in the UK, often replacing Cox's Orange Pippin. Many sports of Gala have been selected, mostly for increased red color, including the popular "Royal Gala". The original cultivar produced fruit with orange stripes and a partial orange blush over a yellow background. Since then, several un-patented sports have been recognized. Additionally, more than twenty sports have received US plant patents: Unpatented varieties include: Auvil, Imperial Gala apples are grown from May through September in the northern hemisphere, but, like most apples, are available almost all year through the use of
Morphism of algebraic varieties Morphism of algebraic varieties In algebraic geometry, a morphism between algebraic varieties is a function between the varieties that is given locally by polynomials. It is also called a regular map. A morphism from an algebraic variety to the affine line is also called a regular function. A regular map whose inverse is also regular is called biregular, and they are isomorphisms in the category of algebraic varieties. Because regular and biregular are very restrictive conditions – there are no non-constant regular functions on projective varieties – the weaker condition of a rational map and birational maps are frequently used