Question

Based on mendel's experiments define:

1)Phenotype
2)pure line
3)expressed character
4)allele

Answer 1

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

Answer 2

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.