TY - GEN AU - DeFelice,L J TI - Forum: how does a zygote become an embryo? SN - 0967-1994 PY - 1996///0920 KW - Animals KW - Embryonic Development KW - Embryonic and Fetal Development KW - Female KW - Male KW - Zygote KW - physiology N1 - Publication Type: Journal Article UR - https://doi.org/10.1017/s0967199400001957 ER -