When PCR amplification of SSU (small subunit ribosomal RNA)yields a population of different PCR products of about the same molecular weight,these fragments can be separated for further analysis by ______.

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Denaturing gradient gel electrophoresis (DGGE) is the best choice for separating PCR products of the same molecular weight. DGGE separates DNA fragments based on their melting behavior, which depends on the sequence composition and length of the molecules. As a result, fragments of the same size but with different sequences will migrate differently in a DGGE gel, allowing for their separation and further analysis. A, B, and D are not suitable methods for separating PCR products of similar molecular weight. Isoelectric focusing separates proteins based on their charge, while size exclusion chromatography separates molecules based on their size. DNA hybridization is used to detect the presence of specific DNA sequences and does not separate molecules based on their size or sequence.

When PCR Amplification of SSU (Small Subunit Ribosomal RNA)yields a Population