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Chromosome pairs | Inheritance and variation | Middle school biology | Khan Academy

Genes are located in the chromosomes of cells, with each chromosome pair containing two variants of each of many distinct genes.

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Credits:
“Black mulberry (Morus nigra) illustration from Traité des Arbre” by Rawpixel Ltd (CC BY 2.0), via Flickr:
Black mulberry (Morus nigra) illustration from Traité des Arbre
https://creativecommons.org/licenses/by/2.0/

“Guinea pigs” by photon_de (CC BY 2.0), via Flickr:
Guinea Pigs
https://creativecommons.org/licenses/by/2.0/

“234/365 – ::ding:: a stroke of genius” by B Rosen (CC BY-ND 2.0), via Flickr:
234/365 - ::ding:: a stroke of genius
https://creativecommons.org/licenses/by-nd/2.0/

“PLoSBiol3.5.Fig7ChromosomesAluFish” by Andreas Bolzer, Gregor Kreth, Irina Solovei, Daniela Koehler, Kaan Saracoglu, Christine Fauth, Stefan Müller, Roland Eils, Christoph Cremer, Michael R. Speicher, and Thomas Cremer (CC BY 2.5), via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:PLoSBiol3.5.Fig7ChromosomesAluFish.jpg
https://creativecommons.org/licenses/by/2.5/deed.en

“Pea flowers” by Greenstone Girl (CC BY-NC 2.0), via Flickr:
Pea Flowers
https://creativecommons.org/licenses/by-nc/2.0/

“Sweet pea ‘Lathyrus odoratus’ violet flower at Boreham, Essex, England 4” by Acabashi (CC BY-SA 4.0), via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Sweet_pea_%27Lathyrus_odoratus%27_violet_flower_at_Boreham,_Essex,_England_4.jpg
https://creativecommons.org/licenses/by-sa/4.0/deed.en

Cell, chromosome, and DNA diagrams created with Biorender.com:
https://biorender.com/

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