Answer:
A. There are fewer cells around the compound X disk compared to a control plate without compound X.
B. There are more cells around the compound X disk compared to a control plate without compound X
Explanation:
A mutagen is any chemical and/or physical factor that is able to induce mutations in the DNA sequence of the cells of an organism. In general, mutations have a deleterious effect on the phenotype. In consequence, it is expected that a mutagen would lead to a decrease in viability of the cells (for example, by causing a loss of function mutation in a growth factor and/or receptor that drives cell proliferation). Moreover, mutations may also cause gain-of-function mutations in genes that encode proteins associated with uncontrolled cell proliferation and survival, thereby increasing the number of cells around the compound X disk.
