阿摩線上測驗
77. These genes form gradients and help establish the axes and other features of an embryo:
(A) homeotic genes.
(B) segmentation genes.
(C) egg-polarity genes.
(D) morphogens.
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統計： A(0), B(0), C(1), D(0), E(0) #2765720
統計： A(0), B(0), C(1), D(0), E(0) #2765720
