What are Chromosomes?

In this video Paul Andersen answers this question about chromosomes. He explains how the base pairs of DNA form genes which are organized into the chromosomes of the overall genome.

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Music Attribution
Title: String Theory
Artist: Herman Jolly
http://sunsetvalley.bandcamp.com/track/string-theory

All of the images are licensed under creative commons and public domain licensing:
CSc, Doc RnDr Josef Reischig. English: Human Karyotype: Karyotype Human 45,XY t1-17 (mosaic). Optical Microscopy Technique: Negative Phase Contrast. Magnification: 6000x (for Picture Width 26 Cm ~ A4 Format)., [object HTMLTableCellElement]. Author's archive. http://commons.wikimedia.org/wiki/File:Human_karyotype_(263_19)_Karyotype_Human_45,XY_t1-17_(mosaic).jpg.
File:Mars-Male-Symbol-Pseudo-3D-Blue.svg, n.d. http://commons.wikimedia.org/wiki/File:Mars-male-symbol-pseudo-3D-blue.svg.
File:Venus-Female-Symbol-Pseudo-3D-Pink.svg, n.d. http://commons.wikimedia.org/wiki/File:Venus-female-symbol-pseudo-3D-pink.svg.
KES47, File:Chromosome-es svg: English: Graphic Decomposition of a Chromosome (found in the Cell Nucleus), to the Bases Pair of the DNA., July 10, 2010. File:Chromosome-es.svg. http://commons.wikimedia.org/wiki/File:Chromosome_en.svg.
LadyofHats, Mariana Ruiz Villarreal. English: A Diagram of a Typical Prokaryotic Cell. This Diagram, Made in Adobe Illustrator, Is an Improved Version of a Similar Diagram, Image:Prokaryote Cell Diagram.svg, Which Was Also Made by LadyofHats. Besides General Appearance Changes, This Version Adds Plasmids and Pili, and Notes That DNA Is Circular., March 2, 2008. Own work (Source: Typical prokaryotic cell, Chapter 4: Mutagenicity of alkyl N-acetoxybenzohydroxamates, Concept 1: Common Features of All Cells, Cells - Structure and Function). http://commons.wikimedia.org/wiki/File:Average_prokaryote_cell-_en.svg.
Szczepan1990, MesserWoland and. Azərbaycanca: Tipik Heyvan Hüceyrəsinin Qurluş Sxemi., October 15, 2006. Own work (Inkscape created). http://commons.wikimedia.org/wiki/File:Biological_cell.svg.

Видео What are Chromosomes? канала Bozeman Science