A name that means replacement.. A family may give the name to a male whose father or older brother has died. CAWO f Somali. A name that comes from the Somali word cawo which means luck.. Outside of Somalia, Somalis may spell it as Awo. name that means replacement.. A family may give the name to a male whose father or older brother has died. CAWO f Somali. A name that comes from the Somali word cawo which means luck.. Outside of Somalia, Somalis may spell it as Awo.
A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project has estimated that humans have between 20,000 and 25,000 genes. Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people.
For a non-technical introduction to the topic, see Introduction to genetics. The human genome is the complete set of nucleic acid sequence for humans (Homo sapiens), encoded as DNA within the 23 chromosome pairs in cell nuclei and in a small DNA molecule found within individual mitochondria. Human genomes include both protein-coding DNA genes and noncoding DNA.