article 38 chromosome inversion 34 Animals 32 Drosophila buzzatii 28 Drosophila 26 nonhuman 24 Inversion, Chromosome 22 Polymorphism, Genetic 22 Karyotyping 20 genetic polymorphism 16 genetic variability 16 Orthoptera 14 altitude 14 animal 14 genetics 14 population genetics 14 Animalia 12 Body Constitution 12 Male 12 chromosome 12 karyotype 12 male 12 natural population 12 natural selection 12 Trimerotropis 10 Trimerotropis pallidipennis 10 Variation (Genetics) 10 body size 10 genetic selection 10 Altitude 8