Each gene has a specific location (locus) on a chromosome and may come in several forms (alleles). genotype The actual genes for a trait present in an individual. genotypic ratio The expected numbers of different genotypes produced by a particular cross.
Bones are made from calcium. A typical bone has an outer layer of hard or compact bone, which is very strong, dense and tough. Inside this is a layer of spongy bone, which is â¦ like honeycomb, lighter and slightly flexible.
The skull is the part of the skeleton that covers and protects the brain and other sense organs. The human skull is composed of 22 types of bones. These bones are separated into two categories, the bones the form the cranium and facial bones.The section of the brain that holds the brain is known as the cranium.The cranium is made up of eight flat bones that are connected. The cranium bones form the forehead and eye socket and the back of the skull.The facial bones include fourteen bones, the majority of them symmetrical to give the face symmetry. The facial bones include bones such as the maxilla, which is the upper jaw and the nasal bone.he cranium bones form the forehead and eye socket and the back of the skull. The facial bones include fourteen bones, the majority of them symmetrical to give the face symmetry. The facial bones include bones such as the maxilla, which is the upper jaw and the nasal bone.