Census sex puzzle
نویسندگان
چکیده
منابع مشابه
Son-biased sex ratios in the 2000 United States Census.
We document male-biased sex ratios among U.S.-born children of Chinese, Korean, and Asian Indian parents in the 2000 U.S. Census. This male bias is particularly evident for third children: If there was no previous son, sons outnumbered daughters by 50%. By contrast, the sex ratios of eldest and younger children with an older brother were both within the range of the biologically normal, as were...
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Little is known of the mechanisms whereby the mammalian indifferent gonad develops into a testis or ovary. In XY individuals, Sry, the mammalian testis-determining gene, is expressed in the pre-Sertoli cells, which then differentiate into Sertoli cells. Other cell types, which include the germ cells, the steroidogenic cells and the connective tissue cells, must then be instructed to develop in ...
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Mammalian sex determination is controlled by the Y-linked gene SRY. Studies of sex-reversed patients and experimental data obtained with mice have identified other genes, such as DAX1, SOX9, SF1, and WT1, which take part in the process, and have suggested how these genes interact to determine the sex of a mammalian embryo. A recent paper in Nature by Swain et al. provides experimental data that...
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We discover and document errors in public-use microdata samples ("PUMS files") of the 2000 Census, the 2003-2006 American Community Survey, and the 2004-2009 Current Population Survey. For women and men age 65 and older, age- and sex-specific population estimates generated from the PUMS files differ by as much as 15 percent from counts in published data tables. Moreover, an analysis of labor-fo...
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Pamela Oliver received her B.A. in sociology from Stanford University and her M.A. from the University of North Carolina, Chapel Hill, in 1972. She is currently working on her Ph.D. at North Carolina. Her major interest is developing exchange theory so that it can apply to inter-group relations, focusing on unbalanced power relations. She is also interested in evolutionary theory, family sociol...
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/350645c0