live intraction

The gene intraction when on egenes masks the effect or When a gene pair hides the effect of another, the phenomenon is called

Assertion: Every mutual intraction between two bodies always follow the action-reaction law. Reason: Single isolated force without reaction is not possible.

$ Viruses are at a border line position between living and non living. ! Phytoplanktons are those living organisms which are aquatic.

Which among the following is prepared from live pathogen or is a live vaccine?