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How is the sex

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Comments(4)

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    Adapting to endure humanity's impact on the world. It's time for legislation and education to reflect sex as a spectrum with unlimited options. Liza Brusman. The way the US thinks about sex is wrong. But as with many binaries, things are more complicated than they seem.
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    XY sex-determination system

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    NOVA Online | Life's Greatest Miracle | How Is Sex Determined?

    The XY sex-determination system is a sex-determination system used to classify many mammals , including humans , some insects Drosophila , some snakes, some fish guppies , and some plants Ginkgo tree. In this system, the sex of an individual is determined by a pair of sex chromosomes. Females typically have two of the same kind of sex chromosome XX , and are called the homogametic sex. Males typically have two different kinds of sex chromosomes XY , and are called the heterogametic sex.
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    Only two sex forms but multiple gender variants: How to explain?

    Are sex and gende r interchangeable terms? In classical biology, both are sometimes but not always used on an equal basis for some groups of animals. However, for our own species the Homo sapiens, they are not. A major question is why are there only two types of gametes sperm- and egg cells , two types of sex steroids, androgens and estrogens in vertebrates, and two types of ecdysteroids in insects , while the reproduction-related behaviour of the gamete producers displays a much greater variability than just two prominent forms, namely heterosexual males and heterosexual females? A second possible pillar is the still poorly understood cognitive memory system in which electrical phenomena and its association with the plasma membrane membrane-cytoskeletal complex of cells play a major role learning, imitation and imprinting.
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    NCBI Bookshelf. Sex differences of importance to health and human disease occur throughout the life span, although the specific expression of these differences varies at different stages of life. Some differences originate in events occurring in the intrauterine environment, where developmental processes differentially organize tissues for later activation in the male or female. In the prenatal period, sex determination and differentiation occur in a series of sequential processes governed by genetic and environmental factors.