The phenomenon of a single gene regulating several phenotypes is called
Multiple allelism
epistasis
Incomplete dominance
Pleiotropism
One of the parents of a cross has mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of $F_{2}$-progenies that mutation is found in
Which of the following diseases results from the genetic inability to synthesize a single enzyme?
If the ratio between $X$-chromosomes and complete set of autosome is $0.5$. Then the individual will be
Euphenics is
Which of the following discoveries resulted in a Nobel Prize?