Which of the following represents the frequency of recombination between two genes that are inversely proportional to the strength of linkage?

The tendency of genes to remain together during the process of inheritance is known as

The distance between two genes in a chromosome is measured in cross-over units,which represent:

If $F_2$ of a dihybrid cross contains only parental combinations,then Mendel would have discovered .....

If the distance between genes on a chromosome is large,then the genes exhibit .....

Select the incorrect statement$(s)$ from the options given below with respect to dihybrid cross.
$I.$ Tightly linked genes on the same chromosome show higher recombinations.
$II.$ Genes far apart on the same chromosome show very few recombinations.
$III.$ Genes loosely linked on the same chromosome show similar recombinations.