Antigenic shift refers to the combination of two different strains of influenza; in contrast, antigenic drift refers to the natural mutation of a single strain of influenza.
A)influenza; in contrast, antigenic drift refers to the natural mutation of a single strain of influenza
B)influenza, different than the natural mutation of a single strain, known as antigenic drift
C)influenza, in contrast to the natural mutation of a single strain, known as antigenic drift
D)influenza, different than antigenic drift, which refers to the natural mutation of a single strain of influenza
E)influenza; in contrast to antigenic drift, which refers to the natural mutation of a single strain of influenza
OA : A
Is not it that a semi-colon connects two sentences that are independent ? Or, is my understanding incorrect , in that, the sentences are independent to stand by their own... Any help is much appreciated.
A)influenza; in contrast, antigenic drift refers to the natural mutation of a single strain of influenza
B)influenza, different than the natural mutation of a single strain, known as antigenic drift
C)influenza, in contrast to the natural mutation of a single strain, known as antigenic drift
D)influenza, different than antigenic drift, which refers to the natural mutation of a single strain of influenza
E)influenza; in contrast to antigenic drift, which refers to the natural mutation of a single strain of influenza
OA : A
Is not it that a semi-colon connects two sentences that are independent ? Or, is my understanding incorrect , in that, the sentences are independent to stand by their own... Any help is much appreciated.
