Generation of non-parental gene combinations is termed as

$A$ genetic map is one that

Linkage in $Drosophila$ was discovered by:

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 $ab/ab$?

State the conclusions drawn from Morgan's experiments on linkage and recombination.

What will be the number of linkage groups in maize if it has $10$ pairs of chromosomes?