What lines of reasoning support the hypothesis that the firstself-replicating systems were based on RNA molecules?

Why are scientists excited to find that RNA molecules can be made that are self-replicating?

What was the importance of replica plating in understanding how mutations arise?”

Please answer fast Which of the following defines DNA barcoding? (more than one answer may be correct). Please explain your answer(s).   A) uses the DNA sequence of a specific fragment of DNA to identify species   B) uses microsatellite allele frequences to estimate Ne   C) uses whole genome sequences to identify markers under selection   D) uses SNPs and a PCA to display population-level relationships   E) uses SNPs and a PCA to display individual-level relationships