Response to Comments on "Drosophila Dosage Compensation Involves Enhanced Pol II Recruitment to Male X-Linked Promoters".

Ferrari et al . and Straub and Becker wrongly claim that an error in the computational analysis calls into question the conclusions of Conrad et al . All the available evidence, including the reanalyzed genomic data, show that the conclusions and the key message of the study remain unchanged: RNA polymerase II recruitment to male X-linked promoters is an important regulatory step during dosage compensation.