| 释义 |
bilateral cleavage
bilateral cleavage[bī′lad·ə·rəl ′klēv·ij] (embryology) The division pattern of a zygote that results in a bilaterally symmetrical embryo. bilateral cleavage
bilateral cleavage or radial cleavage the type of CLEAVAGE which gives rise to BILATERAL SYMMETRY. It occurs in echinoderms and CHORDATES. Compare SPIRAL CLEAVAGE. |