What would happen in an ecosystem without decomposers and detritus feeders?
What will be an ideal response?
Wastes would accumulate, nutrient cycles would slow or stop, and soil quality would deteriorate.
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Conserved indels are
A. a type of transposable sequence characteristic of particular genus and useful for taxonomic analysis. B. sequences in eukaryotic mRNAs that are removed by RNA splicing. C. sequences of protein coding genes that are found altered in related species due to their tendency to accumulate small deletions. D. a type of signature sequence particularly useful for phylogenetic analysis.
Which of the following is not a role for methylation?
A. Methylation can protect bacterial RNA from restriction enzymes that are used to destroy viral DNA. B. Methylation of DNA can act as an inhibitor of gene expression. C. Methylation of DNA can enhance binding of certain proteins. D. Methylation is important in directing mismatch repair to repair the correct DNA strand. E. Methylation in eukaryotes can affect the formation of Z-DNA.
what is the example provided for Reverse transcriptase?
What will be an ideal response?
DNA replaced RNA as the main information
molecule probably because a. DNA contains thymine and RNA does not. b. DNA is double stranded and breaks less easily. c. DNA can store more protein-building instructions in less space. d. RNA is highly unstable. e. two of these are correct..