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  2. XY sex-determination system - Wikipedia

    en.wikipedia.org/wiki/XY_sex-determination_system

    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 usually is determined by a pair of sex chromosomes. Typically, females have two of the same kind of ...

  3. Sex-determination system - Wikipedia

    en.wikipedia.org/wiki/Sex-determination_system

    Some chromosomal sex determination systems in animals. A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. [1] Most organisms that create their offspring using sexual reproduction have two common sexes and a few less common intersex variations.

  4. X+Y - Wikipedia

    en.wikipedia.org/wiki/X+Y

    X+Y, released in the US as A Brilliant Young Mind, is a 2014 British drama film directed by Morgan Matthews and starring Asa Butterfield, Rafe Spall and Sally Hawkins. [2][3] The film, inspired by the 2007 documentary Beautiful Young Minds,[4] focuses on a teenage English mathematics prodigy named Nathan (Asa Butterfield) who has difficulty ...

  5. Klinefelter syndrome - Wikipedia

    en.wikipedia.org/wiki/Klinefelter_syndrome

    Klinefelter syndrome. Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. [10] These complications commonly include infertility and small, poorly functioning testicles (if present). These symptoms are often noticed only at puberty, although this is one of the most common chromosomal ...

  6. Y chromosome - Wikipedia

    en.wikipedia.org/wiki/Y_chromosome

    The Y chromosome is one of two sex chromosomes in therian mammals and other organisms. Along with the X chromosome, it is part of the XY sex-determination system, in which the Y is the sex-determining chromosome because the presence of the Y chromosome causes offspring produced in sexual reproduction to be of male sex.

  7. XXYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XXYY_syndrome

    XXYY syndrome is a sex chromosome anomaly in which males have two extra chromosomes, one X and one Y chromosome. Human cells usually contain two sex chromosomes, one from the mother and one from the father. Usually, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). The appearance of at least one Y chromosome ...

  8. XYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XYY_syndrome

    The syndrome is diagnosed in an increasing number of children prenatally by amniocentesis and chorionic villus sampling [24] in order to obtain a chromosome karyotype, where the abnormality can be observed. It is estimated that only 15–20% of children with 47,XYY syndrome are ever diagnosed. Of these, approximately 30% are diagnosed prenatally.

  9. Unsimulated sex - Wikipedia

    en.wikipedia.org/wiki/Unsimulated_sex

    Pola X "Pola X gained infamy world wide for its unsimulated sex acts between Guillaume Depardieu (Pierre) and Yekaterina Golubeva (Isabelle). Although body stand-ins were used for the most explicit parts." [227] [228] [229] French The Man-Eater (La donna lupo) Film by Aurelio Grimaldi contains a scene of non-simulated fellatio. [230] Italian

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