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Biology
Posted 8 months ago
Does all dna have a function? Is all of the dna in your genome, for example, part of a gene
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Answer from Sia
Posted 8 months ago
Answer
Not all DNA has a known function, and not all DNA is part of a gene.
Solution
a
Functional vs. Non-functional DNA: While a significant portion of DNA is transcribed into RNA and then translated into proteins, there are large segments of DNA whose function is not fully understood. These may include regulatory elements, non-coding RNAs, or sequences with no apparent function
b
Non-coding DNA: Only about 1-2% of the human genome consists of genes that encode proteins. The rest includes introns within genes, regulatory sequences, and non-coding RNA genes, as well as large stretches of DNA with unclear functions, often referred to as "junk DNA."
1 Answer
Not all DNA has a known function, and not all DNA is part of a gene.
Key Concept
Functional vs. Non-functional DNA
Explanation
While some DNA sequences are well-understood and are known to be involved in coding for proteins or regulatory functions, a significant portion of the genome does not have a clearly defined role. This includes non-coding regions and sequences sometimes referred to as "junk DNA."

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