A newly published study has found that males of some of our earliest known ancestors were significantly larger than females. The pronounced difference in body size present in both Australopithecus ...
The largest males have bigger weapons, but smaller males have other advantages. Photo by Ummat Somjee When it comes to some members of the insect world, size variations can be mind-boggling. A ...
Sexual size differences are widespread in biology, yet the "how" behind them often remains vague. We asked a concrete question in a classic model organism: when female flies are larger than males, do ...
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