Psychology research conducted over the past few years suggests that males and females can preferentially engage in different decision-making strategies. The precise neural underpinnings of these reported gender differences ...
Neuroscience research suggests that adult male rodents and humans perform better than females on spatial tasks. These are tasks that involve the ability to understand and remember the spatial relationships between different ...
Men and women whose mothers experienced stressful events during pregnancy regulate stress differently in the brain 45 years later, results of a long-term study demonstrate.
Apr 5, 2021
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There's no such thing as a single "gay gene" that drives a person's sexual behavior, concludes the largest genetic study ever conducted on the issue.
Aug 29, 2019
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Scientists at the University of Cambridge have completed the world's largest ever study of typical sex differences and autistic traits. They tested and confirmed two long-standing psychological theories: the Empathizing-Systemizing ...
Nov 12, 2018
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(Medical Xpress)—A team of researchers with McGill University in Canada has found evidence that suggests that young women who engage in frequent sex experience memory improvements. In their paper published in Archives of ...
Are the brains of men and women truly different? Not if you look at the overall structure, a new study says.
Nov 30, 2015
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Exercise—it's associated with increased muscle strength, improved heart health, lower blood sugar and just about every other physical improvement you can name. But how does regularly puffing away on a treadmill, biking ...
May 14, 2024
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Engineers at the University of California San Diego have discovered that some brain cells age more rapidly than others, and they are disproportionately abundant in individuals afflicted with Alzheimer's disease. Additionally, ...
May 14, 2024
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Due to a later melatonin onset and increased alertness in the evening, teenagers often find it hard to fall asleep at a time that would allow them to clock up the recommended eight to ten hours of sleep each night.
May 1, 2024
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In biology, sex is a process of combining and mixing genetic traits, often resulting in the specialization of organisms into male and female types (or sexes). Sexual reproduction involves combining specialized cells (gametes) to form offspring that inherit traits from both parents. Gametes can be identical in form and function (known as isogametes), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist: male gametes are small, motile, and optimized to transport their genetic information over a distance, while female gametes are large, non-motile and contain the nutrients necessary for the early development of the young organism.
An organism's sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic. Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.
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