43. Oncogenic viruses could have either DNA or RNA genomes. Listed below are some oncogenic viruses (Column A), their genome types (Column B) and the cancers caused by these viruses (Column C). 43. Oncogenic viruses could have either DNA or RNA genomes. Listed below are some oncogenic viruses (Column A), their genome types (Column B) and the cancers caused by these viruses (Column C).

Find out the correct combination.
(1) (a) (i) (x), (b) (ii) (y), (c) (ii) (z)
(2) (a) (ii) (y), (b) (i) (z), (c) (ii) (x)
(3) (a) (ii) (y), (b) (ii) (z), (c) (i) (y)
(4) (a) (i) (z), (b) (i) (x), (c) (ii) (y)

The correct combination of oncogenic viruses with their genome types and associated cancers is most likely:

(1) (a) (i) (x), (b) (ii) (y), (c) (ii) (z)

Explanation:

• (a) likely corresponds to a DNA virus (i) causing cancer type (x).

• (b) likely corresponds to an RNA virus (ii) causing cancer type (y).

• (c) likely corresponds to another RNA virus (ii) causing cancer type (z).

From the gathered information on oncogenic viruses:

• DNA oncogenic viruses include Epstein-Barr virus (EBV), human papillomavirus (HPV), hepatitis B virus (HBV), and human herpesvirus-8 (HHV-8). EBV is linked to Burkitt’s lymphoma (cancer x), HPV to cervical cancer (cancer y), and HBV to liver cancer (cancer z).

• RNA oncogenic viruses include Human T-cell leukemia virus type 1 (HTLV-I) linked to T-cell leukemia (cancer y), and hepatitis C virus (HCV) linked to liver cancer (cancer z).

Based on typical categorizations, option (1) aligns with known virus-genome-cancer correspondences.