94% of homozygous Vangstbm-7-6 embryos fail to hatch, exhibiting a phenotype similar to unfertilized eggs. 81% of Vangstbm-7-6/Vangstbm-153 embryos fail to hatch, exhibiting a phenotype similar to unfertilized eggs. Approximately 10% of Vangstbm-7-6/Vangstbm-7-6 embryos are capable of reaching the 2-5 hour stage of development. Approximately 23% of Vangstbm-7-6/Vangstbm-153 embryos are capable of reaching the 2-5 hour stage of development.