The dog genome is basically the human genome divided into about 70 different pieces and rearranged on a greater number of chromosomes, according to a new map of the dog genome.While making the map, the researchers lined up each chromosome segment in the dog with its corresponding region of the human genome.he dog genome is basically the human genome divided into about 70 different pieces and rearranged on a greater number of chromosomes, according to a new map of the dog genome.
There are three main layers if skin but there are layers within two of these layers. One of these layers is the epidermis; the epidermis is the top external layer and has five layers within that layer.
Skin - Structure in humans and mammals. 1  Mammalian skin is composed of two primary layers... 2  the epidermis, which provides waterproofing and serves as a barrier to infection; and. 3  the dermis, which serves as a location for the appendages of skin; 4  The epidermis is composed of the outermost layers of the skin.