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The basic physical unit of heredity

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4 votes
It would be gene...bc when you think about it "that's if it doesn't make since i think " without genes there's no heredity!

hope that helped =D

User Unskilledidiot
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Genes are the basic physical unit of heredity and inheritance. They are a physical matter that determine the phenotypes and genotypes of an organism.

Hope this helps :)
User Geofflane
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