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.
Understanding the structure of the skin. Our skin is divided into three layers: the epidermis on the surface, the dermis in the middle, and the subcutaneous tissue deepest down. Each layer protects the body in a different way. The epidermis, the uppermost layer of skin, protects us from external irritation. It tends to be very thin, with a thickness of no more than around 0.1-0.3 mm. The epidermis is itself divided into four layers: the stratum corneum, the stratum granulosum, the stratum spinosum, and the stratum basale. Epidermal cells are constantly being created on a 28-day cycle of rebirth and decay. We call this the âturnoverâ of the skin.