Expressed Sequence Tags (ESTs) refers to:

Novel DNA sequences

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Genes expressed as RNA

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Polypeptide expression

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DNA polymorphism

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Solution

The correct option is B Genes expressed as RNA
Expressed Sequence Tags or ESTs are genes that are expressed as RNA in the body. ESTs represent portions of expressed genes. They may be represented as either cDNA/mRNA sequence.

Novel DNA sequences are the genomic sequences that have emerged recently.

Polypeptide expression refers to the final expression of the gene in the form of a protein.

DNA Polymorphism refers to the two or more variants of a particular DNA sequence and it arises due to mutations.

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