If it is true that most house dust is made up of dead skin cells, would it be possible to do a DNA test to ...

Question

find out who all has visited your house?

Answer 1

As a layer of skin dies and becomes the surface layer its DNA is destroyed. However skin often is subjected to micro abrasions and cuts and any dried blood (but not red cells) should include DNA. The DNA may become degraded by bacteria. BTW, bloodhounds can follow a human's trail by the flakes of skin (squams) that fall like snow unless a strong wind blows them away.

Answer 2

nope, dead cells and dust are different in fact they differ in size. A dust particle is larger than a cell. DNA on dead cells can be obtain however some limitation if cells die by apoptosis, then DNA would be spill thus unable to obtain DNA.

Answer 3

confident that's. an important factor of airborne dirt and dust is ineffective dermis fragments from human bodies, tobacco smoke, and airborne debris (pollen or different plant debris, business smoke debris, and so on.). airborne dirt and dust additionally comes from clay and different mineral (soil) rely this is "tracked" into the dwelling house.

Answer 4

First of all it is not all dead skin cells.It can't be.And secondly,yes it is possible to trace DNA.But I think an expert should tell this.