The term 'crossing over' was coined by

Which of the following does not follow the law of independent assortment?

The recombination frequency between genes $B$ and $A$ is $5\%$. The recombination frequency between genes $A$ and $C$ is $15\%$. What is the possible sequence of these genes on the chromosome?

In which of the following is the phenomenon of crossing over $NOT$ observed?

When a group of genes exhibits linkage,they:

What map unit (Centimorgan) is adopted in the construction of genetic maps?