Can someone tell me a few things about genes. Any inform given would be appreciated! :)

Question

taramgrant0543664 · Answer

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. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.

anonymous · Answer

genes contain the blueprint for building proteins which enable cells to perform special functions . one strand of dna contain many genes. i.e blood carries red blood cell which uses a protein called hemoglobin to carry oxygen throughout the body. gene mutation can lead to disorders i.e sickle cell anemia

blake4560 · Answer

Thank you both soooooooooooooo much! :)