Genes and Genetic Diseases
Genes and Genetic Diseases
Copyright © 2019, Elsevier Inc. All rights reserved.
Copyright © 2014, 2010, 2006 by Mosby, Inc., an imprint of Elsevier Inc.
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Copyright © 2014, 2010, 2006 by Mosby, Inc., an imprint of Elsevier Inc.
Deoxyribonucleic Acid (DNA)
Chromosomes contain genes.
Genes are the basic unit of inheritance and are composed of DNA.
DNA subunit or nucleotide contains
one pentose sugar (deoxyribose).
one phosphate group.
one nitrogenous base.
Cytosine (C), thymine (T), adenine (A), guanine (G)
DNA has a double helix structure.