Q.
The diagram given below shows how mutations in certain genes (X and $Y$ ) can lead to cancer. Use the diagram to answer the question that follows

What do $X$ and $Y $ represent?
X
Y
(1)
Mutagen
Carcinogens
(2)
Proto-oncogenes
Tumor suppressor gene
(3)
Carcinogen
Proto-oncogenes
(4)
Proto-oncogenes
Carcinogens
| X | Y | ||
|---|---|---|---|
| (1) | Mutagen | Carcinogens | |
| (2) | Proto-oncogenes | Tumor suppressor gene | |
| (3) | Carcinogen | Proto-oncogenes | |
| (4) | Proto-oncogenes | Carcinogens | |
Solution: