El aparato respiratorio elimina A. sustancias no intoxicadas D. sustancias tóxicas de nuestro organismo C. austancias ricas en nutrientes porfa es urgente no abla ingles hablo español ​

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals