Articles: biological-evolution.
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Biography Historical Article
Nature and nurture: the continuing relevance of Darwin.
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Hoppe-Seyler's Z. Physiol. Chem. · Jun 1982
Comparative Study[Hemoglobins, XLVII. Hemoglobins of the bar-headed goose (Anser indicus): primary structure and physiology of respiration, systematic and evolution].
The primary structures of the alpha- and beta-chains of the main component of Bar-headed Goose (Anser indicus) are given. By homologous comparison with the hemoglobin of the Grey-Lag Goose (Anser anser) 3 differences were found in the alpha-chains, 1 difference in the beta-chains. In position alpha 119 H2Ala and beta 125 H3Asp alpha 1 beta 2-contact points are changed. ⋯ The Canada Goose (Branta canadensis), however, which belongs to the genus Branta, has a number of substitutions similar to the Bar-headed Goose hemoglobin. These changes in primary structure suggest that Grey-Lag Goose and Bar-headed Goose are separated by a period of 9-15 Million years. This would support the hypothesis that the two species of goose became geographically separated by the elevation of the Himalayas.
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J. Nerv. Ment. Dis. · Nov 1981
Psychiatric disorders in the context of evolutionary biology. A functional classification of behavior.
This paper examines selected psychiatric illnesses from an evolutionary biological perspective. We present a functional classification of behavior-a classification system concerned with biological goals and behaviors which have biological consequences. The paper begins with an outline of functional views in psychiatry. ⋯ The capacity of individuals with psychiatric illnesses to achieve biological goals is reviewed briefly. Adaptive behaviors used to pursue the biologically relevant goals are then presented. The relationship between the capacity to enact adaptive behaviors and goal achievement is discussed with particular emphasis on the important role of adaptive strategies as a means of goal pursuit.
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Comparative Study
Locomotion and posture of the Malayan siamang and implications for hominoid evolution.
Wild, adult siamang were observed for over 800 h in lowland dipterocarp forest in the Krau Game Reserve, Pahang, West Malaysia. Siamang use four patterns of locomotion: brachiation, climbing, bipedalism and leaping. The pattern of locomotion used by the siamang varies with the size of arboreal supports and with major behavioral activity. ⋯ Locomotion during feeding is primarily climbing among small branches. In feeding, siamang use suspensory postures among small supports and seated postures on large supports. Comparison of siamang locomotion and posture with that of other apes suggest that quadramanous climbing during feeding is the basic hominoid locomotor adaptation.