阿摩線上測驗
10. A genetic change that caused a certain Hox gene to be expressed along the tip of a vertebrate limb bud instead of further
back made possible the evolution of the tetrapod limb. This type of change is an illustration of ________.
(A) heterochrony, a change in the timing of developmental events
(B) allopolyploidy, an increase in chromosome number
(C) paedomorphosis, or retention of ancestral juvenile structures in an adult organism
(D) a change in a homeotic developmental gene that altered the spatial organization of body parts
(E) allopatric speciation
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統計： A(7), B(9), C(5), D(142), E(4) #2069589
統計： A(7), B(9), C(5), D(142), E(4) #2069589
