Results 31 to 40 of about 2,243,500 (299)
Average sex ratio and population maintenance cost
, 2015 The ratio of males to females in a population is a meaningful characteristic of sexual species. The reason for this biological property to be available to the observers of nature seems to be a question never asked.
Eduardo Garibaldi +2 more
core +1 more source
Sex Ratio and Sexual Dimorphism in \u3ci\u3eFormica Exsectoides\u3c/i\u3e, the Allegheny Mound Ant (Hymenoptera: Formicidae) [PDF]
, 2018 We excavated 66 mounds from 6 populations of Formica exsectoides in Michigan jack pine, collecting sexual caste pupae for sex ratio estimates and measurement of dimorphism.
Bristow, C. M, Rowe, H. C
core +2 more sources
Air Pollution and Human Sperm Sex Ratio
American Journal of Men's Health, 2018 The present study was designed to address the hypothesis that exposure to specific air pollutants may impact human sperm Y:X chromosome ratio. The study population consisted of 195 men who were attending an infertility clinic for diagnostic purposes and ...
Michał Radwan +5 more
doaj +1 more source
Age Structure and Sex Ratio of Thrips Scirtothrips Dorsalis Hood (Thysanoptera : Thripidae) Associate with Mango Agroecosystem in East Java, Indonesia [PDF]
, 2013 A research aimed to investigate the age structure and sex ratio of S. dorsalis Hood in mango agroecosystem was conducted at PT. Trigatra Rajasa farm, Situbondo, East Java, Indonesia. The research was started from April to May 2013.
Affandi, A. (Affandi) +1 more
core +1 more source
Sex ratio effects on reproductive strategies in humans [PDF]
Royal Society Open Science, 2015 Characterizations of coy females and ardent males are rooted in models of sexual selection that are increasingly outdated. Evolutionary feedbacks can strongly influence the sex roles and subsequent patterns of sex differentiated investment in mating ...
Ryan Schacht +1 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine +14 more
wiley +1 more source
European Journal of Human Genetics, 2004 Two recent papers suggest distorted sex and transmission ratios associated with BRCA1 mutations. If real, these would provide novel insights into the normal biological function of this gene and have implications for genetic epidemiologic methods used to estimate penetrance.
Jeffery P, Struewing +4 more
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Objective To evaluate selumetinib exposure using therapeutic drug monitoring (TDM) in pediatric patients with neurofibromatosis type 1 (NF1) and plexiform neurofibromas (PN), assess interpatient pharmacokinetic variability, and explore the relationship between drug exposure, clinical response, and adverse effects.
Janka Kovács +8 more
wiley +1 more source
A study on sex ratio at birth in suburban slums of Mumbai
Indian Journal of Public Health, 2011 A cross sectional study was conducted in four selected suburban slums of Mumbai to determine the sex ratio at birth and to assess the various factors related to it.
Ancilla Tragler
doaj +1 more source
Traditional agricultural practices and the sex ratio today. [PDF]
PLoS ONE, 2018 We study the historical origins of cross-country differences in the male-to-female sex ratio. Our analysis focuses on the use of the plough in traditional agriculture.
Alberto Alesina +2 more
doaj +1 more source