DNA-editing ‘pencils’ probe early human development

TL;DR - Adenine base editing provides a precise way to alter DNA and probe gene function during early human embryonic development. The approach could help researchers study developmental biology with more targeted edits.

• Uses adenine base editors—described as DNA-editing “pencils”—to rewrite specific genomic sites.
• Applies the technique to investigating gene function in early human embryos.
• The provided excerpt does not specify experimental results, genes targeted, or editing outcomes.