 
 <prompt> Wetin this model show? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Instead, e come up with di spearhead model of evolution, wey be one kain genetic pluralism. According to dis model, living organisms dem get goals, and dem dey act based on these goals, each one dey guided by one central control. For di highest level, dis na di brain of humans, but controls dey also exist for species wey no too complex like di amoeba. Dis control organ dey play one special role for evolution - e be di "spearhead of evolution". Di goals dey bring purpose enter di world. Mutations for di genes wey dey determine di structure of di control fit cause serious changes for behaviour, preferences and goals, without any effect on di organism's phenotype. Popper dey suggest say dis kind of changes wey dey purely behavioural dey less likely to kill di organism compared to serious changes for di phenotype. 