If there are no constraints on the process of speciation, then number species might be expected to match available niches and this indefinitely large. One possible constraint is opportunity for allopatric divergence. In 1981, Felsenstein used a simple elegant model ask if also genetic constraints. He showed that progress towards speciation could described by build-up linkage disequilibrium amon...

Abstract There is near unanimity among international business scholars that it takes more time to expand internationally than domestically. Hence, this why some are puzzled by born globals (BGs), firms make large foreign sales at birth or shortly afterwards. Explanations given for “anomaly” BGs have exceptional resources—advanced technologies and a high orientation on the part of their entrepre...