Hox genes: control which amino acids get plugged into polypeptide chains. control the development of language in humans. appear to function in similar ways across diverse groups of organisms. function only in fruit flies.

Answer: Appear to function in similar ways across diverse groups of organisms.

Explanation:

The hox genes are a subset of homeotic genes.The function of the hox genes is to control the development of the body plan of an individual during the embryonic stage.Thus, the basic body form of an organism is laid down with the help of these genes.These genes are present in many different species from fruit fly to mice to humans.The reason that they are present in different organisms is that there was a common ancestor that possessed the hox gene cluster and then the genes were passed on to different vertebrates. However, the slight changes that have occurred in these genes are due to duplication events.

It explains why rocks appear in layers