Which of the following diseases results from the genetic inability to synthesize a single enzyme?
Colour blindness
Down's syndrome
Phenylketonuria
Crossing over
Antisera used to detect $Rh$ blood group
After crossing two plants, the progenies are found to be male sterile. The phenomenon is found to be maternally inherited and is due to some genes which reside in
To store blood some anticoagulant is added. It can be
The movement of a gene from one linkage group to another is called
Euphenics is