The variable regions of the heavy and light chains form the sites of an antibody.

Antigen binding fragments

Explanation:

Antigen binding fragments are site locations that promote antigen-antibody binding, promoting complete protection of the organism. These fragments have specific molecules between antibody and antigen, so we can say that through the antigen binding fragments each antibody is antigen specific. In summary, we can state that the variable regions of the heavy and light chains form the antigen binding fragments sites of an antibody.

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.