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.
Compact bone is made up of concentric rings of matrix that surround central canals which contain blood vessels, embedded in this bone tissue are small cave-like spaces called lacunae (contain osteocytes cells), which are connected to each other through small tunnels called canalicula.one tissue is a kind of connective tissue that holds lots of calcium and phosphorous salts. About 25% of bone tissue is composed of water while another 25% is made up of protein fibers like collagen. The other 50% of bone tissue is a combination of mineral salts, mainly calcium and phosphorous.