Mendel observed that some characters did not assort independently. Later researchers found it to be due to

The linkage map of a fruit fly has a total map distance of $66$ units. The gene for yellow body $(a)$ is at one end and the gene for short hair $(y)$ is at the other end. What will be the recombination frequency between these two genes $(a$ and $y)$?

When normal and mutant alleles are present on opposite chromosomes of a homologous pair,the heterozygotes are called as:

The phenomenon of crossing over in diploid organisms is responsible for

Incomplete linkage is $A$. Complete linkage is $B$. Choose the correct option for $A$ and $B$.

Two genes '$a$' and '$b$' show $20\%$ recombination. What will be the proportion of gametes produced by a dihybrid $F_1$ individual with the genotype $++/ab$,derived from a cross between $++/++$ and $ab/ab$?