1.Phenotype are external characters like color,shape,size 2.It refers to the pure breeding varieties. 3.It is the character that is dominant. eg: in tall and dwarf ,tall is dominant 4.allele are alternative expression of genes
phenotype:it is defined as the characters that can be seen. allele:the pair of factor which are responsible for a character. pure line: a breed or strain of animals or plants in which certain characters that appears in successive generations as a result of inbreeding.
