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.
Types of Bones. There are four major types of bones. They are: long bones, short bones, flat bones, and irregular bones. The primary differences between the bones are their shape, and material they are made of. The four types are listed below, in more detail, along with a diagram of each showing the primary differences. Long Bones.