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What are extra chromosomal inheritance...

What are extra chromosomal inheritance ? Explain with an example .

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Chromosomes are the location of genes, which determine the character of the individual. But in certain traits the DNA present in chloroplast and mitochondria decide certain characters. It is a kind of Non-Mendelian inheritance. As this involves cytoplasmic organelles like chloroplast and mitochondria, that acts as inheritance vectors, it is called extra chromosomal inheritance through independent, self-replicating plasmogenes.
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