Question

A scientist makes the argument that she has found DNA evidence that shows that evolution does not exist. What would her evidence have to show for her to be correct?

Strong genetic similarities in closely related organisms and weak genetic similarities in distantly related organisms.
Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related organisms.
Strong physical similarities among closely related organisms and also among distantly related organisms.
Weak physical similarities among closely related organisms and also among distantly re

Answer 1

I think it's weak physical similarities because in evolution the creature usually looks somewhat like it's predecessor and also their genes have some resemblance as well.

Answer 2

The physical similarities are somewhat a very bad marker. The reason for this mostly is mostly that organisms phenotypes can be very different even what closely related, to take a personal example I found that a plant and an animal shared a gene with very high probability.
How many physical similarities can you find between a plant and an animal?

No the best marker would be, to go straight for the DNA sequence and do a sequence alignment. If she find a DNA that suggest evolution does not exist, she should in theory get when she do the sequence alignment a very poor alignment and remain so low that even if there are a few similarities, it should be simply because of randomness.