In order to calculate map distance of genes on a chromosome, one must know the
Number of mutant genes
Recombination frequency of each gene locus
Cross over percentage
Non-cross over percentage
Genes $A, B$ and $C$ are linked. Genes $A$ and $B$ are more close than $A$ and $C.$ Find out the correct option for the given statements
$I.$ $A$ might be before $B$ and $C$
$II.$ $B$ might be between $A$ and $C$
$III.$ $C$ might be between $A$ and $B$
$IV.$ More crosses has occurred between $A$ and $C$ than $A$ and $B$
Who clearly proved and define linkage?
The map distance between genes $A$ and $B$ is $3$ units, between $B$ and $C$ $10$ units and between $C$ and $A$ $7$ units. The order of the genes in a linkage map constructed on the above data would perhaps be
Definitions / Explanation : Linkage
Exchange of genetic material between chromatids of homologous chromosomes during meiosis is called