Q.3.  Distance between the genes and percentage of recombination shows

a.  a direct relationship

b.  an inverse relationship

c.  a parallel relationship

d.  no relationship

(a) Crossing over separates genes away from each other. So, the distance between the genes and the percentage of recombination shows a direct relationship, i.e., when genes are close together they have high linkage and exhibit low recombination frequencies. Thus, the other option are wrong as it does not show parallel or inverse relationship.