00:01
All right, so a little bit of a tricky question here.
00:03
So we have essentially a statement about tumor cells, and we need to choose the answer choice of the four where it is not a way that tumors change over time.
00:13
So the tricky part about this question is that all four of the answer choices are true.
00:17
So tumors do show genetic variability.
00:22
In fact, every single tumor is likely going to be quite unique in its genome and the mutations that have caused it to become a tumor in the first place.
00:29
Tumor cells do pass on their mutations when they divide.
00:34
And this is what's very dangerous about them.
00:36
When you have a mutation that causes, for instance, the upregulation of cell growth signaling, right? the cells that are created due to that increased cell growth will also be expressing that cell growth.
00:52
And you can see how that can very quickly accelerate into a very large malignant population...