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An orchidometer can measure testicular volume, which in turn is tightly associated with both sperm and hormonal parameters. [6] A physical exam of the scrotum can reveal a varicocele, but the impact of detecting and surgically correct a varicocele on sperm parameters or overall male fertility is debated. [6]
Sterility can also be caused by selective breeding, where a selected trait is closely linked to genes involved in sex determination or fertility. For example, goats breed to be polled (hornless). This results in a high number of intersex individuals among the offspring, which are typically sterile.
Compared to physically distributed games, digital games cannot be destroyed because they can be redownloaded from the distribution system. Services like Steam, Origin, and Xbox Live do not offer ways to sell used games once they are no longer desired. Steam offers a non-commercial family sharing options. [25]
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English: This video is an example of a man and woman having penile-vaginal intercourse in the standing position, a relatively normal example of sexual intercourse. It begins with the insertion of a man's erect penis into a woman's vagina at 0:07, followed by pelvic thrusts, becoming faster, initially to stimulate the vagina as it continues to lengthen and become lubricated.
In some instances, botched childhood circumcisions have also resulted in full or partial penectomies. [ 4 ] Genital surgical procedures for transgender women undergoing sex reassignment surgery do not usually involve the complete removal of the penis; part or all of the glans is usually kept and reshaped as a clitoris , and the skin of the ...
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The title refers to the sterile insect technique, a technique of eradicating the population of screwflies by the release of large amounts of sterilized males that would compete with fertile males, thus reducing the native population more with each generation this is done. This story concerns a similar distortion of human sexuality with ...