Answer:
Guanine -
%
Step-by-step explanation:
As per the Chargaff's rules, the ratio of complementary base pairs must be 1:1.
Which means that there must be same amount of guanine and cytosine (as one base pair) and same amount of adenine and thymine (as another base pair) in any organism.
However in wheat which belongs to taxon Triticum,
Guanine -
%
Cytosine -
%
Adenine-
%
Thymine-
%