How to design specific gRNAs and validate heritable CRISPR edits in mice before bree

[Tyler54]

I'm a biology graduate student starting a new project that will involve using CRISPR gene editing in a mouse model to study a specific oncogene. While I understand the basic mechanism of Cas9 and guide RNAs, I'm concerned about off-target effects and ensuring our edits are precise and heritable. What are the current best practices for designing highly specific gRNAs, and what validation methods—like whole-genome sequencing or targeted deep sequencing—are considered the gold standard in the field to confirm edit fidelity before proceeding with breeding?