Frequency of crossing over in a chromosome is an index of
Relative distance between its genes only
Structural affinity between its genes only
Strength linkage between its genes only
$(a)$ and $(b)$ both are correct
In Mendelism, linkage was not observed due to
Crossing over in diploid organism is responsible for
Give scientific reasons : Linkage and crossing over of genes are alternatives of each other.
The distance between two genes in a chromosome is measured in cross-over units which represent
If gene exchange rate is $30\%$ of the two linked genes, then the distance between these two genes is