Single gene can exhibit multiple phenotypic expression, this is called.....
Incomplete dominance
Pleotropism
Co-dominance
Parthenogenesis
The first definite proof of mutagenic action of $X$-rays was given by
A hereditary disease, which is never passed on from father to son is
The gene which increases the frequency of mutation in other gene is referred to as
Mendel enunciated
$A$ : One drum stick per nucleus is present in the neutrophil of normal female.
$R$ : It is absent in the neutrophil of male