Cover Letter: A cover letter must be uploaded with your submission. This can be used to draw the Editor’s attention to particular aspects of the manuscript or related issues. Please state in your cover letter if this is the first contact you have had with Heredity regarding your submission; if your manuscript is a resubmission, please state the original manuscript number. We welcome suggestions for reviewers but ask that these are included in the ‘Manuscript Comment’ during submission. Requests to exclude referees should also be made via this route.