Social monogamy provided a solution, as only true heirs would inherit their parents' estate. While the potential negative genetic consequences of living in a small population are well established, relatively less is known about behavioural responses to demographic uncertainty and how these responses affect the resilience of small groups.
Magdalena; Walker, Robert S. For the novel by Anna Gavalda, see Hunting and Gathering novel. Views Read Edit View history. The mating system of foragers in the standard cross-cultural sample.
Subscribe to OregonLive. Other Hunter-Gatherer Differences Marriages amongst hunter-gatherers are much more likely to be with unrelated individuals or distantly related kin compared with food producers horticulturalists and agro-pastoralists who more frequently marry closely-related individuals Walker ; Walker and Bailey Strier KB.
Baker, Matthew J. Berghahn Books. Prehistoric hunter-gatherers lived in groups that consisted of several families resulting in a size of a few dozen people. What allows modern humans to break out of the low-viability trap of living in small populations?
Linkage disequilibrium in the human genome. This process of agriculture-driven expansion led to the development of the first forms of government in agricultural centers, such as the Fertile CrescentAncient IndiaAncient ChinaOlmecSub-Saharan Africa and Norte Chico.
London: Hunter gatherers sex history in Naperville University Press. Yiwara: foragers of the Australian desert. Berghahn Books. Categories : non-fiction books American non-fiction books Books by Christopher Ryan English-language books HarperCollins books Sexual orientation and science Non-fiction books about sexuality.
The authors argue as a result that conventional wisdom regarding human nature, as well as what they call the standard narrative of evolutionary psychologyis wrong.
Hill, Kim R. London: Vintage. In addition to these demographic uncertainties, the genetic load can be high in small populations due to inbreeding depression, recurrent deleterious mutations and the loss of adaptive variation in response to random drift [ 10 — 12 ].
He will be sensitive to signs of her sexual infidelities which would reduce his all-important paternity certainty —while taking advantage of short-term sexual opportunities with other women as his sperm are easily produced and plentiful.