When your body is infected with the cold virus, antibodies tag the pathogen’s which are found on their outer surface, for destruction by immune cells.

The given blank can be filled with antigens.

Explanation:

The immune system safeguards the body from probable harmful components by identifying and reacting towards the antigens. The antigens are the components generally the proteins found on the surface of the viruses, cells, or bacteria.  

The non-living components like the chemicals, drugs, toxins, and foreign substances like splinter can also be the antigens. The immune system identifies and eradicates, or attempts to destroy the components, which comprise antigens.  

a time line cause it goes from 685 to 978

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation: