Explain Rh-incompatibility in humans. 

What is self-incompatibility ?

Self-incompatibility in plants is an adaptation which promotes cross pollination. How?

The antibody that is capable of crossing the placental barrier and is responsible for the Rh incompatibility between an Rh negative mother and an Rh positive foetus is

Assertion : Self-incompatibility is a genetic mechanism which prevents self-pollination and thereby fertilisation by inhibiting either pollen germination or pollen tube growth in the pistil. Reason : In gametophytic self-incompatibility, the incompatibility reaction is determined by the genotype of the sporophytic tissue of the plant from which the pollen is derived.

Which type of antibody molecules is involved in ABO - incompatibility reaction?

The proteinaceous substance involved in sporophytic incompatibility and stored in the exine is derived from

Name the type of pollination in self-incompatible plants.

Explain the histology of human gut.

Rh incompatibility occurs when mother and foetus

Define self-incompatibility. How do self-incompatible plants pollinate?