May play a role in apoptosis. Does not appear to show pro-apoptotic activity when expressed ectopically in early embryos. Strongest expression in ovary and eye, weaker expression in gut, kidney and brain. Little expression in liver or heart. Not expressed maternally. Zygotic expression from 24-72 hours post-fertilization (hpf). Also expressed in adult. Belongs to the Bcl-2 family.