Digit Ratio and Dental Caries: A Sexually Dimorphic Trait
نویسندگان
چکیده
منابع مشابه
Developmental basis of sexually dimorphic digit ratios.
Males and females generally have different finger proportions. In males, digit 2 is shorter than digit 4, but in females digit 2 is the same length or longer than digit 4. The second- to fourth-digit (2D:4D) ratio correlates with numerous sexually dimorphic behavioral and physiological conditions. Although correlational studies suggest that digit ratios reflect prenatal exposure to androgen, th...
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The hormonal environment an individual experiences during development can have lasting effects on behavior, morphology, and physiology. However, measuring endogenous hormone exposure during early embryonic development and relating it to adult phenotype has proved to be challenging. The relative length of digit 2 to digit 4 (2D:4D) in adults is thought to reflect the relative concentration of an...
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The 2nd to 4th digit ratio (2D:4D) is a sexually dimorphic biometric marker, related to prenatal estrogen and testosterone levels in utero, and determined genetically by the HOX genes. 2D:4D presents a population variation, which seems to be dependent on geographical position or ethnicity, and may reflect differences in prenatal steroid hormone levels among different ethnic groups. In view of i...
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The ratio of the length of the second digit (index finger) divided by the fourth digit (ring finger) tends to be lower in men than in women. This 2D:4D digit ratio is often used as a proxy for prenatal androgen exposure in studies of human health and behavior. For example, 2D:4D ratio is lower (i.e. more "masculinized") in both men and women of greater physical fitness and/or sporting ability. ...
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Introduction: We investigated the sexually dimorphic effects of Dextromethorphan (DM) on cognitive and depression-like behaviors as well as on hippocampal histology in rats following acute administration. Methods: Wistar rats of both sexes were treated with 25 or 50 mg/kg of DM for 7 days via intraperitoneal injection. At the end of the administration, behavioral studies were performed on the ...
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ژورنال
عنوان ژورنال: International Journal of Clinical Pediatric Dentistry
سال: 2018
ISSN: 0974-7052,0975-1904
DOI: 10.5005/jp-journals-10005-1474