The tendency of genes to remain together during the process of inheritance is known as
Sex linkage
Linkage
Differential inheritance
Optional linkage
$A$ : Morgan's cross III was conducted in Drosophila to locate genes on chromosome for white eye colour.
$R$ : The cross was done between red eyed hybrid female and white eyed male.
When two genes are situated very close to each other in a chromosome
Who put forward the “Theory of linkage''
Two genes $R$ and $Y$ are located very close on the chromosomal linkage map of maize plant. When $RRYY$ and $rryy$ genotypes are hybridized, then $F_{2}$-segregation wii show
Crossing over is