Mendel’s law of sagregation is applicable to
Dihybrid cross only
Monohybrid cross only
Both dihybrid and monohybrid cross
Dihybrid but not monochybrid
The percentage of heterozygous individuals obtained in $F_2$ generation from selfing the plants with genotype $Rr$ would be
Primary source of allelic variation is
If an offspring shows any one of the characters of either of parents, the
An organism with two identical alleles for a given trait is