Antigenic evoution : influenza virus from North America and Asia are sampled In two successive years and plotted in two-dimensio
nal antigenic space. The coordinates of each are (i) North American viruses: (2,1) for 2013 and (4,3) for 2014, and (ii) Asian: (4,18) for 2013 and (5,17) for 2014. (a) how does the maqnitude of antigenic change compare between the two regions? (b)how does the direction of antigenic change compare between the two regions?
The only <em><u>possible correct answer</u></em> is:
C) h bisects g.
Explanation:
Since f and h are parallel, f cannot bisect h. Since f is perpendicular to g, f and g cannot be parallel. Since b is perpendicular to f, and f is parallel to h, then b will also be perpendicular to h; they are not parallel.