lethal | maternal effect
embryonic abdominal segment
embryonic abdominal segment 1
embryonic abdominal segment 2
embryonic abdominal segment 3
embryonic abdominal segment 4
embryonic abdominal segment 5
embryonic abdominal segment 6
embryonic abdominal segment 7
embryonic abdominal segment 8
embryonic abdominal segment 9
embryonic abdominal segment 10
embryonic abdominal segment 11
Embryos occasionally lack abdominal segments. Maternal effect mutation.
Occasional embryo lacks abdominal segments (Lehmann, quoted in FBrf0066905).