Variation in chromosome number in the blue fox (Alopex lagopus) and its effect on fertility

biological properties canidae carnivore carnivoros cell structure chromosome chromosome number chromosomes cromosomas estructura celular fecundidad fecundity fertilidad fertilite fertility fisiologia fonction physiologique foxes mammals nombre chromosomique noyau cellulaire nucleo nucleus performance de reproduction physiological functions physiologie physiology renard reproduction reproductividad reproductivity structure cellulaire vertebrados vertebrates vertebre zorro