(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | evaluation of performance by assigning a grade or score |
(genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species | the act of making a visible mark on a surface |
a wooden structure consisting of an upright post with a transverse piece | a pattern of marks |
a marking that consists of lines that cross each other | a distinguishing symbol |
any affliction that causes great suffering | |