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Usually, sex is determined by an organism's genes. With genetic sex determination, most alleles or genes that influence sexual development are on the same chromosome.
A comprehensive and friendly guide to sex, sexuality, and sexual health. Get answers to your sexual health questions, sex tips and techniques, sex research and ...
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The science of love is still in its infancy, but the discoveries are coming thick and fast. Find out all about it with our topic guide
Tiếng Anh: Giới tính. without distinction of age and sex — không phân biệt tuổi tác và nam nữ · Giới đàn ông, giới phụ nữ. the fair ...
Our love-hate relationship with love and relationships starts here with ideas for singles dating, sex tips, and the truth about what guys think: Glamour.com
Sex, n. [L. sexus: cf. F. sexe.] 1. The distinguishing peculiarity of male or female in both animals and plants; the physical difference between male and female; the ...