1. A process of backward evolution or decline in which an organism or system loses previously acquired characteristics or becomes simpler in structure
The retrograde development of the parasitic organism resulted in the loss of its digestive system.
O desenvolvimento retrógrado do organismo parasitário resultou na perda de seu sistema digestivo.
2. In biology, a reversal in the normal progression of development, often resulting in devolution or degeneration
Scientists observed retrograde development in the cave-dwelling fish species due to the absence of light.
Os cientistas observaram desenvolvimento retrógrado na espécie de peixe que habita cavernas devido à ausência de luz.