According to evolutionary theory, housekeeping genes are shared with other living things, because of common decent. Evolutionary theory suggests that tiny progressions will eventually lead to other living things. But as scientists sequence more genomes from different animals, they discover something which isn’t that friendly towards evolution and it’s been 20 years and counting for coming up with an explanation which would be more friendly toward evolution.
What scientists have been discovering within the genome project are specialized genes or best known as orphan genes. What is an orphan gene? An orphan gene has coding in it that is unique only to that animal and no other. These DNA sequences appear suddenly and fully functional without any trace of evolutionary ancestry. This is why I refer to it as “specialized”. It’s been a surprise for scientists who believe in evolution. Orphan genes are not easily discovered. It takes careful research because the genomic world is very massive. There is also no standardized method in which to use, so it varies from researcher to researcher.
Orphan genes are found in humans too, in fact there was a recent discovery which increased the differences between humans and chimps. Scientists found over 1300 orphan genes which are completely different between humans and chimps. It is possible they may find more as research techniques get better and covering more of the body. In this recent discovery, the focus for these orphan genes were found in the liver, heart, brain, and testes. In ants, researchers have found over 28,000 orphan genes that were specialized only for ants and not other insects.
While orphan genes cause more confusion in the theory of evolution, creationism on the other hand finds these discoveries intriguing because it helps to understand the patterns of genetic diversity related within a created kind. Creationism holds to the view that there are only variants within a kind but no kind changing into a totally different species which is what evolutionary theory claims. Such precise genetic arrangements are truly amazing!