Haemophilia is also called
Bleeders disease
Blood disease
$RBC$ disease
All of these
The phenomenon of incomplete dominance was observed by
Number of linkage group in Pisum sativum is
Assertion : Phenylketonuria is a recessive hereditary disease caused by body’s failure to oxidize an amino acid phenylalanine to tyrosine, because of a defective enzyme.
Reason : It results in the presence of phenylalanine acid in urine.
The first definite proof of mutagenic action of $X$-rays was given by
The two organelles responsible for cytoplasmic inheritance among eukaryotes are