Gene-mapping technology was developed by

The recombination frequency between the genes $a$ and $c$ is $5\%$,$b$ and $c$ is $15\%$,$b$ and $d$ is $9\%$,$a$ and $b$ is $20\%$,$c$ and $d$ is $24\%$,and $a$ and $d$ is $29\%$. What will be the sequence of these genes on a linear chromosome?

Which one of the following statements is $NOT$ true regarding crossing over during meiosis?

Alleles of different genes that are on the same chromosome may occasionally be separated by a phenomenon known as

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

The first mutant gene reported by $T.H. Morgan$ in $Drosophila$ was the . . . . . . .