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New study suggests winter babies face socioeconomic disadvantages
Many of us may often feel that we've been born under an unlucky sign. Now, new research by a pair of University of Notre Dame economists suggests that some of us are, in fact, born in an unlucky season. view more (2009-01-08)
In spiders, size matters: Small males are more often meals
Female spiders are voracious predators and consume a wide range of prey, which sometimes includes their mates. view more (2008-09-11)
Obesity linked to hormone imbalance that impacts sexual quality of life
Hormonal changes and diminished sexual quality of life among obese men are related to the degree of obesity, and both are improved after gastric bypass surgery according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM). view more (2009-03-03)
Infidelity produces faster sperm
Until now, it has been difficult to prove that fast-swimming sperms have an advantage when it comes to fertilizing an egg. view more (2009-01-21)
Fatherhood possible for many testicular cancer survivors, study finds
The overall rate of fatherhood after treatment for testicular cancer is high, but the ability to conceive and the time to conception are influenced by the type and intensity of treatment. view more (2005-11-02)
The evolutionary foundation of genomic imprinting in lower vertebrates
A Chinese scientist group working in College of Life Science, Zhejiang University, has shown that, as mammalian Igf2 CpG island, goldfish Igf2 CpG island has a parental differentially methylated region (DMR). view more (2009-05-18)
Male-killing bacteria makes female butterflies more promiscuous
A study at UCL (University College London) finds that a high-prevalence of male-killing bacteria active in many species of insect including the butterfly, actually increases female promiscuity and male fatigue. view more (2007-02-06)
Stress delays puberty
NWO research at Utrecht University has shown that when carp are subjected to stress, the development of their genital organs is delayed, so that they reach puberty later. It is likely that the stress hormone cortisol plays a major role in delaying puberty. Changes in water temperature produce stress in fish. Dimitri Consten of Utrecht University... view more... (2001-05-30)
Canada's universal health care system should fund in-vitro fertilization
Canada should extend universal health coverage to fund in vitro fertilization (IVF) and intracytoplasmic sperm injection. view more (2009-08-31)
How does one sex grow larger than the other?
Why are males larger than females in some animal species (such as most mammals), females larger than males in others (such as most insects), and why are the sexes alike in yet other species (such as several birds)? view more (2007-01-30)
Chromosomes dance and pair up on the nuclear membrane
Meiosis - the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell - is a major crossroads in all organisms reproducing sexually. view more (2009-11-16)
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