The graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross in called
A.Pedigree analysis – A record of inheritance of certain genetic traits for two or more generations presented in the form of a diagram or family tree is called Pedigree analysis.
B.Punnet square - It is a graphical representation to indicate all possible union of gametes during fertilization and to calculate the probability of all possible genotypes of offsprings in a genetic cross.
C.Chromosome map - a technique used in autosomal DNA testing which allows the testee to determine which segments of DNA came from which ancestor. In order to map DNA segments on specific chromosomes it is necessary to test a number of close family relatives.
D.Genotypic ratio – Ratio, in which the representation of an individual’s genetical constitution with respect to a single character or set of characters.
E.Karyotype - the number and appearance of chromosomes in the nucleus of a eukaryotic cell.
So, the correct option is ‘Punnett square’.