Learn about deoxyribonucleic acid. Get an overview of DNA bases, complementary base pairing, and the structure of the double helix. [13:02]

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As a class, students work through an example showing how DNA provides the "recipe" for making our body proteins. They see how the pattern of nucleotide bases (adenine, thymine, guanine, cytosine) forms the double helix ladder shape of DNA, and serves as the code for the steps required to make genes. They also learn some ways that engineers and scientists are applying their understanding of DNA in our world.

Genes are instruction manuals for our bodies and are contained in DNA. This video describes how genes make us unique.

Discover how mitochondrial DNA (mtDNA) is inherited, and complete a pedigree chart by determining which individuals might share mtDNA with an unknown ancestor.

This link has many tools to help understand the revolutionary sciences and discoveries in genetics.

Psychology is designed to meet scope and sequence requirements for the single-semester introduction to psychology course. The book offers a comprehensive treatment of core concepts, grounded in both classic studies and current and emerging research. The text also includes coverage of the DSM-5 in examinations of psychological disorders. Psychology incorporates discussions that reflect the diversity within the discipline, as well as the diversity of cultures and communities across the globe.Senior Contributing AuthorsRose M. Spielman, Formerly of Quinnipiac UniversityContributing AuthorsKathryn Dumper, Bainbridge State CollegeWilliam Jenkins, Mercer UniversityArlene Lacombe, Saint Joseph's UniversityMarilyn Lovett, Livingstone CollegeMarion Perlmutter, University of Michigan

By the end of this section, you will be able to:

Explain the basic principles of the theory of evolution by natural selection
Describe the differences between genotype and phenotype
Discuss how gene-environment interactions are critical for expression of physical and psychological characteristics

At this site download and read Severo Ochoa's Nobel Lecture entitled "Enzymatic synthesis of ribonucleic acid," which was originally given December 11, 1959. Lecture is available in pdf format.

This lesson presents how the structure and function of nucleic acids pertain to living things. It is 2 of 2 in the series titled "Structure and Function of Macromolecules: Nucleic Acids."