BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuGenesA gene is a short piece of DNA. Genes tell the body how to build specific proteins. There are about 20,000 genes in each cell of the human body. Together, they make up the blueprint for the human body and how it works.ProteinsProteins are the building blocks of life. Every cell in the human body contains protein. The basic structure of protein is a chain of amino acids. ...ImageRead Article Now Book Mark Article A person's genetic makeup is called a genotype. Information Genes are made of DNA. Strands of DNA make up part of your chromosomes. Chromosomes have matching pairs of 1 copy of a specific gene. The gene occurs in the same position on each chromosome.ChromosomesChromosomes are structures found in the center (nucleus) of cells that carry long pieces of DNA. DNA is the material that holds genes. It is the bu...ImageRead Article Now Book Mark Article Genetic traits, such as eye color, are dominant or recessive:Dominant traits are controlled by 1 gene in the pair of chromosomes. Recessive traits need both genes in the gene pair to work together.Many personal characteristics, such as height, are determined by more than 1 gene. However, some diseases, such as sickle cell anemia, can be caused by a change in a single gene. Sickle cell anemiaSickle cell disease is a disorder passed down through families. The red blood cells that are normally shaped like a disk take on a sickle or crescen...ImageRead Article Now Book Mark Article Open ReferencesReferencesGene. Taber's Medical Dictionary Online. www.tabers.com/tabersonline/view/Tabers-Dictionary/729952/all/gene. Accessed April 29, 2021.Nussbaum RL, McInnes RR, Willard HF. The human genome: gene structure and function. In: Nussbaum RL, McInnes RR, Willard HF, eds. Thompson & Thompson Genetics in Medicine. 8th ed. Philadelphia, PA: Elsevier; 2016:chap 3.AllVideoImagesTogChromosomes and DNA - illustration Humans typically have 23 pairs of chromosomes, or 46 chromosomes in total. Chromosomes are made up of long strands of DNA, which contain all the body's genes.Chromosomes and DNAillustrationChromosomes and DNA - illustration Humans typically have 23 pairs of chromosomes, or 46 chromosomes in total. Chromosomes are made up of long strands of DNA, which contain all the body's genes.Chromosomes and DNAillustrationRelated Information Protein in diet(Nutrition) Review Date: 5/3/2021 Reviewed By: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.