In pin - eyed flowers of Primula

Describe in brief the outbreeding devices observed in disc floret of sunflower and Primula flower.

Consider the following statement(s) In Protandrous flowers pistil matures earlier In Protogynous flowers pistil matures earlier Herkogamy is noticed in unisexual flower. Distyly is present in Primula.

A cross between white eyed female and red eyed male Drosophila gives rise red eyed female and white eyed male. Rarely the cross gives rise to white eyed females and red eyed males . This is due to

A cross between white eyed female and red eyesd male Drosophila gives red eyed females and white eyed males .Rarely the cross gives rise to white eyed females and red eyed males This is due to

When red eyed female Drosophila is crossed with white eyed male, the F2 offspring would be.

What are linked genes? Diagrammatically represent a cross between a white-eyed female and red-eyed male Drosophila.