(A) Schematic for ICAHCI-mediated functional mutagenic screening in bone development in mice via CRISPR/Cas9. (B) Schematic for comparison of ICAHCI and zygote injection/electroporation mediated genetic screening in mice via CRISPR/Cas9. Cas9, CRISPR-associated protein 9; CEBPβ, CCAAT/enhancer binding protein beta; CEBPδ, CCAAT/enhancer binding protein delta; CRISPR, clustered regularly interspaced palindromic repeats; DKO-AG-haESC, double knockout androgenetic haploid embryonic stem cell; ICAHCI, intracytoplasmic AG-haESCs injection; IRX5, iroquois homeobox 5; MSC, mesenchymal stem cell; PPARγ, peroxisome proliferator activated receptor γ; sgRNA.