Genetic and environmental influences on growth of Philadelphia Black and White schoolchildren.
Genetic and environmental influences on growth of Philadelphia Black and White schoolchildren.
复制标题
遗传和环境对费城黑人和白人学童成长的影响。
作者：
W. Mueller;R. Malina
研究了114对美国黑人和101对白人同胞的体型和组成上的同胞相关性，年龄从6岁到12岁不等。在这两个种族中，相关性相似。在骨骼测量(0.35-0.48)、四肢周长(0.41-0.43)和皮褶(0.31-0.41)方面，兄弟姐妹的相似性或多或少相似。一对成员之间的年龄差异被发现影响兄弟姐妹的相关性，特别是对低基因控制的测量。这被认为是环境对兄弟姐妹相似的贡献的证据。在黑人(就像他们在南美农村地区的样本中一样)，姐妹在脂肪方面的相似性(与兄弟姐妹相比)更高，但在白人中则不明显。这种模式可能源于这两种文化(非洲人和拉丁美洲人)中类似的性别角色分化，或者在不太有利的环境条件下性别限制基因的类似表达。
Sibling correlations in body size and composition are considered in 114 pairs of American Black and 101 pairs of White sibs, ranging in age from 6 to 12 years. Correlations were similar in the two races. Sibling resemblance was more or less similar for skeletal measurements (0.35-0.48), limb circumferences (0.41-0.43), and skinfolds (0.31-0.41). Age difference between members of a pair was found to affect the sibling correlations, especially for measurements of low genetic control. This is taken as evidence for environmental contributions to sibling resemblance. Higher sister-sister similarities in fat (as compared to brother-brother) were evident in Blacks (as they were in a rural South American sample) but not in Whites. This pattern could arise from similar sex-role differentiation in these two cultures (Afro and Latin American) or similar expression of sex-limited genes under less favourable environmental conditions.