How does the creationist accept that a DNA test shows they're related to their father but reject that a DNA test shows they're related to a chimp? [Spirituality & Religion]

DNA lets you see that you're related to your parents, somewhat more distantly related to your grandparents and what your racial heritage is.
DNA lets us see that a tiger is closely related to a lion or a mouse is closely related to a beaver.....so why can't it show that you're closely related to a chimpanzee?

The real question to the creationist: At what point can you claim that DNA is no longer showing relatedness but a common designer and how do you justify that claim?