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MODERN ENDOSYMBIONTS. "Many protozoan and metazoan cells harbor vertically inherited endosymbionts in their cytoplasm. Comprehensive reviews have covered most aspects of these ancient mutualistic relationships, including metabolism, genetics, and evolutionary history of the endosymbiont/host cell associations." https://lnkd.in/dHQJqnW View in LinkedIn

BINGO. "I introduce the idea of horizontal larval transfer." Ouch. Clunky. But possibly, tantalizingly, fascinating. https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

INFERENCES. "My own hypothesis of the transfer of larval forms depends on genetic mechanisms that are imperfectly understood but that can be inferred." Just as Darwin's work operated in the absence of modern genetics. https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

IMPROBABLE BUT COMPREHENSIVE. "At first sight, this may seem a highly improbable thesis, but it provides a tenable explanation of the facts." https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

NEW LATERAL GENE TRANSFERS. "The implied transfers of large amounts of genetic material are attributed to successful hybridizations between animals that are not closely related." https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

LARVAL TRANSFER. "Rather, it proposes that on occasion, in evolutionary history, larval and embryonic forms that originally evolved in one lineage have later appeared in another, as if they had jumped from one branch of the phylogenetic tree to a distinct, and sometimes distant one.” https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

HORIZONTAL LARVAE. "My alternative theory, horizontal transfer of larval form, does not postulate that larvae have altered very little or become superficially more similar as their corresponding adults have evolved striking differences." https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

NOT SUFFICIENT. "Paradoxes exist, however, in the many examples of apparently closely related larvae giving rise to apparently distantly related adults, and the less common examples of apparently distantly related larvae giving rise to apparently closely related adults. Conventional explanations, when they exist, invoke either convergent evolution or larval conservatism." https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

MOSTLY ADEQUATE. "The larva and adult phases in development commonly follow totally different ways of life, and the process which Darwin called "descent with modification" and natural selection are frequently adequate to explain the differences in form that adapt them to their different environments." https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn

NOT SUFFICIENT. "I claim that this theory alone is not adequate to explain why some animals have the embryos and larvae they do and the life histories they do." https://books.google.es/books?hl=en&lr=&id=4Bv_CAAAQBAJ&oi=fnd&pg=PR3&dq=evolution+of+larval+stage&ots=Ajv40BxpV8&sig=UoAuSNQhyUJxvYurqij18mPF3GM View in LinkedIn