If gene exchange rate is $30\%$ of the two linked genes, then the distance between these two genes is
$30$ unit
$15$ unit
$60$ unit
$45$ unit
In a test cross involving $F_1$ dihybrid flies, more parentaltype offspring were produced than the recombinanttype offspring. This indicates
What is recombination ? Discuss the applications of recombination from the point of view of genetic engineering.
Who clearly proved and define linkage?
$A$ : Crossing over is exchange of genetic material between non-homologous chromosomes.
$R$ : It produces new linkages.
The chromosome maps are not accurate maps because