Question

what are genes?why are they located in cell

Answer 1

Heya!
Here is ur answer!
In biology, a gene is a sequence of DNA or RNA which codes for a molecule that has a function. During gene expression, the DNA is first copied into RNA. 

OR

Genes are simply short regions of DNA which code for either a protein or RNA molecule. In eukaryotes, genes are mostly found in the nucleus of the cell, but some (13 in humans) are also located in the cell's mitochondria, in mitochondrial DNA.

Hope this information helps u!
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