Article
Atavisms: medical, genetic, and evolutionary implications.
Perspectives in biology and medicine - 1 Jan 2011
Tomić Nenad, Meyer-Rochow Victor Benno
Abstract excerpt
Traits expected to be lost in the evolutionary history of a species occasionally reappear apparently out of the blue. Such traits as extra nipples or tails in humans, hind limbs in whales, teeth in birds, or wings in wingless stick insects remind us that certain genetic information is not completely lost, but can be reactivated. Atavisms seem to violate one of the central evolutionary principles, known as Dollo's...
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