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In one-male group species, extra males typically reside in all-male “bachelor” groups. These are Han
The hand on the right exhibits the orange-tinged skin characteristic of carotenodermia
Peer group activity of adolescents
(a) The characteristic karyotype of Klinefelter syndrome. (b) The young man (left) in these photos h
Self-splicing of group I introns
Each enzyme functions best within a characteristic range of pH