During the transfer of DNA for Southern blotting, larger fragments of DNA:

What determines the specificity of polymerase chain reaction (PCR) amplicons?

One of the main differences between end-point PCR and Reverse-Transcriptase (RT) -PCR is that:

Quantitating DNA concentration can be performed by which of the following?

DNA has what net charge?

Organic DNA extraction involves which of the following?

During RNA processing sections of nucleotides are removed by:

You are a researcher studying the genetic basis of colon cancer. You have been working with a colon cancer cell line to determine the expression levels of different genes that might contribute to cancer formation. You obtain the DNA methylation status of five genes of interest (the data are shown in the table below). The plus (+) sign indicates the level of DNA methylation; more plus signs correlates with increased methylation levels. Gene Methylation levels 1 ++ 2 +++++ 3 +++ 4 ++ 5 + Based on the information shown above, which gene would you predict to have the 1) highest rate of transcription and 2) lowest rate of transcription?

If a piece of chromatin contained 200 copies of the histone H4, then how many nucleosomes would be present? 

The agouti locus helps determine coat color in mice, and this phenotype can vary from light to dark between genetically identical individuals. You have discovered a drug that reduces the variation in the agouti phenotype. What is a likely explanation for this drug’s mechanism of action?