In a deed restricted community, a homeownersâ association (HOA) enforces rules pertaining to how your property is used and what it looks like. Most deed restricted communities require an HOA fee that pays for the communityâs upkeep and maintenance.
DNA, chromosomes and genes. Every cell in your body contains DNA (deoxyribonucleic acid). DNA, the genetic code for your body, exists as two long, paired strands spiraled into a double helix called a chromosome. DNA is like a blueprint that tells your body how to grow and develop. Each cell contains two copies of each chromosome, one copy inherited from your mother through the egg and one from your father through the sperm.
Humans have 23 pairs of chromosomes: one set from mom and the other from dad. Spread among these chromosomes are around 20,000 genes (think 23 lists of millions of letters, with about 20,000 words in amongst the random letters). The entire set of ~20,000 genes is called the genome. So, chromosomes are made of DNA and proteins. Genes are stretches of DNA that contain code to make proteins. DNA is a molecule made up of a sequence of nucleotides.