 
 <prompt> How evolution spearhead dey affect species? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Instead, e formulate di spearhead model of evolution, wey be one version of genetic pluralism. According to dis model, living organisms dem get goals, and dem dey act based on dis 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 dey less 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 drastic changes for behaviour, preferences and goals, without any impact 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 drastic changes for di phenotype.``` 