Two insect species live in the same habitats; the Horned Beetle and the Suicide Beetle. Horned beetle males fight each other over territories on apple fruits and mate with multiple females in their territories. Horned beetles that lose fights never find a mate. Suicide beetle males disperse in search of females that have territories on Hawthorn fruits and females mate with multiple males. Suicide beetle males offer themselves as a nuptial gift to the females who eat the males. In the lab these two species will mate and produce offspring but those offspring are sterile. Answer the following questions below: 

Which mode of speciation occurred that initially led to the formation of these two species. What evidence provided supports your answer?rn

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Altruistic behaviour is commonly observed in many species conferring them with an evolutionary a... View the full answer