Found 2557 Hypotheses across 256 Pages (0.006 seconds)
  1. Pastoralism is always adopted prior to the development of high lactose digestion capacity among adults (615).Holden, Clare - Phylogenetic analysis of the evolution of lactose digestion in adults, 1997 - 2 Variables

    The ability of adults to digest lactose is common only in populations of European and circum-Mediterranean origin, a distribution thought to be a result of genetic adaptation to drinking milk from domestic livestock. Two additional hypotheses have been proposed to explain the distribution of high lactose digestion capacity: (1) supplemental calcium in high-latitude populations prone to vitamin D deficiency and (2) maintenance of water and electrolytes in the body in highly arid environments. However, these hypotheses are confounded by the shared ancestry of populations whose lactose digestion capability has been tested. Therefore, the authors test all three hypotheses using a phylogenetic comparative method for 62 cultures.

    Related HypothesesCite
  2. There is positive selection for high lactose digestion capacity among adults in populations living in drier environments (615).Holden, Clare - Phylogenetic analysis of the evolution of lactose digestion in adults, 1997 - 2 Variables

    The ability of adults to digest lactose is common only in populations of European and circum-Mediterranean origin, a distribution thought to be a result of genetic adaptation to drinking milk from domestic livestock. Two additional hypotheses have been proposed to explain the distribution of high lactose digestion capacity: (1) supplemental calcium in high-latitude populations prone to vitamin D deficiency and (2) maintenance of water and electrolytes in the body in highly arid environments. However, these hypotheses are confounded by the shared ancestry of populations whose lactose digestion capability has been tested. Therefore, the authors test all three hypotheses using a phylogenetic comparative method for 62 cultures.

    Related HypothesesCite
  3. There is positive selection for high lactose digestion capacity among adults in populations living in high-latitude, low-sunshine environments (615).Holden, Clare - Phylogenetic analysis of the evolution of lactose digestion in adults, 1997 - 2 Variables

    The ability of adults to digest lactose is common only in populations of European and circum-Mediterranean origin, a distribution thought to be a result of genetic adaptation to drinking milk from domestic livestock. Two additional hypotheses have been proposed to explain the distribution of high lactose digestion capacity: (1) supplemental calcium in high-latitude populations prone to vitamin D deficiency and (2) maintenance of water and electrolytes in the body in highly arid environments. However, these hypotheses are confounded by the shared ancestry of populations whose lactose digestion capability has been tested. Therefore, the authors test all three hypotheses using a phylogenetic comparative method for 62 cultures.

    Related HypothesesCite
  4. In past Bantu-speaking cultures, matriliny and cattle will have a relationshipHolden, Clare Janki - Spread of cattle led to the loss of matrilineal descent in Africa: a coevolu..., 2003 - 3 Variables

    Through phylogenetic comparison, Holden and Mace explore the relationship between descent and cattle among a sample of 68 Bantu/Bantoid-speaking populations in Africa. The authors posit that when matrilineal cultures adopt cattle, they become patrilineal. Possible theories are offered to explain trends and variation in the data.

    Related HypothesesCite
  5. The adoption of cattle will be associated with the loss of matrilinyHolden, Clare Janki - Spread of cattle led to the loss of matrilineal descent in Africa: a coevolu..., 2003 - 4 Variables

    Through phylogenetic comparison, Holden and Mace explore the relationship between descent and cattle among a sample of 68 Bantu/Bantoid-speaking populations in Africa. The authors posit that when matrilineal cultures adopt cattle, they become patrilineal. Possible theories are offered to explain trends and variation in the data.

    Related HypothesesCite
  6. Matrilineal societies are less likely to have ploughs or large domesticated animals, more likely to be horticultural (5).Surowiec, Alexandra - A worldwide view of matriliny: using cross-cultural analyses to shed light o..., 2019 - 8 Variables

    This article tested multiple previous hypotheses for associations between matriliny and cultural traits typically associated with stability and loss (subsistence strategy, animal domestication, mating system, residence pattern, wealth transfer, and property succession). Combining both genetic and linguistic data, researchers formed a phylogenetic ‘supertree’ that includes 16 matrilineal populations. Using this dataset they performed various analyses to assess patterns of evolution of matriliny and matrilocality.

    Related HypothesesCite
  7. Sexual dimorphism in stature will be greater in polygynous societies (27).Holden, Clare - Sexual dimorphism in stature and women's work: a phylogenetic cross-cultural..., 1999 - 2 Variables

    This article presents a phylogenetic approach to studying sexual dimorphism of stature. Results show a significant association between sexual division of labor and sexual dimorphism of stature.

    Related HypothesesCite
  8. Sexual dimorphism in stature will be associated with variation in the sexual division of labor (27).Holden, Clare - Sexual dimorphism in stature and women's work: a phylogenetic cross-cultural..., 1999 - 2 Variables

    This article presents a phylogenetic approach to studying sexual dimorphism of stature. Results show a significant association between sexual division of labor and sexual dimorphism of stature.

    Related HypothesesCite
  9. There will be an association between type of subsistence and sexual dimorphism of stature (27).Holden, Clare - Sexual dimorphism in stature and women's work: a phylogenetic cross-cultural..., 1999 - 2 Variables

    This article presents a phylogenetic approach to studying sexual dimorphism of stature. Results show a significant association between sexual division of labor and sexual dimorphism of stature.

    Related HypothesesCite
  10. Among pastoralists, subsistence and economic specialists will be more mobile (22).Porčić, Marko - Nomadic pastoralism in the early bronze age of the central balkans: evaluati..., 2008 - 2 Variables

    This article presents a cross-cultural analysis of the characteristics of mobile pastoral groups to determine if similar groups were likely in prehistory in the central Balkans. The author reviews Johnson’s (2002) classification of pastoral adaptation modes and his analysis largely confirms her preliminary findings. He finds, however, that subsistence and economic specialists tend to have higher mobility, a variable in turn associated with high seasonal variability.

    Related HypothesesCite