Os zygomaticum bipartitum: frequency distribution in major human populations

The frequency distribution of lethal chromosomes in finite populations.

The statistical techniques for studying the population dynamics of recessive lethal genes were developed mainly by Wright,'-' who studied the distribution of gene frequencies in populations. In reality, however, the frequencies of individual lethal genes cannot be observed but the frequency of lethal-bearing chromosomes is determined. In large populations the random fluctuation of the frequency...

Male dominance rarely skews the frequency distribution of Y chromosome haplotypes in human populations.

A central tenet of evolutionary social science holds that behaviors, such as those associated with social dominance, produce fitness effects that are subject to cultural selection. However, evidence for such selection is inconclusive because it is based on short-term statistical associations between behavior and fertility. Here, we show that the evolutionary effects of dominance at the populati...

Frequency of Apolipoprotein E Alleles in Iranian Populations

The Frequency Distribution of Chief Complaints in Patients with Major Depressive Disorder Referring to Psychiatric Clinics in Kerman

Introduction: Physical symptoms associated with depression and common psychiatric disorders sometimes lead to the misdiagnosis of depressive disorders. The aim of this study was to determine the frequency distribution of different chief complaints in patients with major depressive disorder referring to psychiatric clinics according to their demographic characteristics and source of referral. Me...

Frequency of Major Histocompatibility Antigens Class I in Mazandaran Province

 Background and purpose: Major histocompatibility antigens are the most polymorphic components of the immune system. The purpose of this study was to determine the frequency of human leukocyte antigens (HLA) in a population in Mazandaran province, Iran. Materials and methods: In a cross sectional study, peripheral blood samples were obtained from 550 people in Immunogenetics Research Center af...