Loading Read Counts

As you have seen in the video, you have to create a set of consensus peak calls before you can test for differential binding. This can be achieved with the following line of R code:

ar_counts <- dba.count(ar_peaks, summits=200)

Consider the following statements.

  1. In ar_counts all samples will have read counts for the same set of peak calls.
  2. Some read counts may be 0.
  3. All peaks in ar_counts are 200 bp wide.
  4. All peaks in ar_counts are 400 bp wide.

Which of these statements are true?

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