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.
Bones make up the human skeletal system and are used to support the body and help provide movement. They are made up of two types of bone tissue: spongy and compact. These tissues differ in how dense the bone is, or how tightly the cells are packed together.Compact bone accounts for more than 75 percent of all bone matter in the body when measured by weight.lat bones often have two thin, parallel layers of compact bone, with spongy bone inside. These are often curved bones and include the bones of the skull. Irregular bones do not fit into any of the other shape categories, so they are grouped together.