What is the name of the pea species used by Bateson and Punnett in their experiments?

In the fruit fly $Drosophila$,the lack of independent assortment between genes $A$ and $B$ is due to .....

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 will show

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

Genes $A$ and $B$ are linked. What will be the genotypes of the offspring produced from a cross between $AB/ab$ and $ab/ab$?

The coupling and repulsion theory was proposed by: