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   What are sex chromosomes?

   • Sex chromosomes are chromosomes that affect your sexual anatomy and reproductive development. Most of us were raised with the idea that there are two sexes: male and female. We’re usually told that people with XY chromosomes are male and people with XX chromosomes are female. It’s a lot more complicated than that.

   Sex Chromosomes: Definition, Purpose, Examples - Healthline

   www.healthline.com/health/sex-chromosomes

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   How many X chromosomes does a female have?

   • The female has two X chromosomes, and all female egg cells normally carry a single X. The eggs fertilized by X-bearing sperm become females (XX), whereas those fertilized by Y-bearing sperm become males (XY).

   Sex chromosome | Definition, Examples, & Facts | Britannica

   www.britannica.com/science/sex-chromosome

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   Are XX and XY the same sex chromosome?

   • XX and XY with the aforementioned expressions are the most common sex chromosomes and corresponding organs, but they’re not the only ones. Some people have differing sex chromosomes, such as those who are born with an extra X chromosome (XXY) or who are missing an X chromosome (XO).

   Beyond X & Y: Chromosomes and Sex Organs - Scienceline

   scienceline.org/2020/10/beyond-x-y-chromosomes-and-sex-organs/

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   Are X chromosomes male or female?

   • Individuals having two X chromosomes (XX) are female; individuals having one X chromosome and one Y chromosome (XY) are male. The X chromosome resembles a large autosomal chromosome with a long and a short arm. The Y chromosome has one long arm and a very short second arm.

   Sex chromosome | Definition, Examples, & Facts | Britannica

   www.britannica.com/science/sex-chromosome

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2. www.britannica.com › science › sex-chromosomeSex chromosome | Definition, Examples, & Facts | Britannica

   www.britannica.com › science › sex-chromosome

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   Learn how sex chromosomes determine biological sex in humans and other mammals. Find out about sex-linked traits, sex chromosome disorders, and the differences between X and Y chromosomes.

   • Author: The Editors of Encyclopaedia Britannica

3. en.wikipedia.org › wiki › Sex-determination_systemSex-determination system - Wikipedia

   en.wikipedia.org › wiki › Sex-determination_system

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   The XX/XY sex-determination system is the most familiar, as it is found in humans. The XX/XY system is found in most other mammals, as well as some insects. In this system, females have two of the same kind of sex chromosome (XX), while males have two distinct sex chromosomes (XY).

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     X and Y chromosomes explained

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     XX-XY Sex Determination System | Genetics Ep. 10

     Feb 18, 2021

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     The combination of XX Chromosomes or XY Chromosomes determines a person’s biological sex.

     Jul 23, 2023

     3.8K Views

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5. en.wikipedia.org › wiki › XY_sex-determination_systemXY sex-determination system - Wikipedia

   en.wikipedia.org › wiki › XY_sex-determination_system

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   In this system, the sex of an individual is determined by a pair of sex chromosomes. Females have two of the same kind of sex chromosome (XX), and are called the homogametic sex. Males have two different kinds of sex chromosomes (XY), and are called the heterogametic sex.

6. scienceline.org › 2020 › 10Beyond X & Y: Chromosomes and Sex Organs - Scienceline

   scienceline.org › 2020 › 10

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   Oct 26, 2020 · Learn about the variations of sex chromosomes and sex organs beyond XX and XY, such as XXY, XO, ovotestes and more. Explore the complexities of intersex, a spectrum of people who have sex characteristics that do not neatly fit into binary categories.

7. www.healthline.com › health › sex-chromosomesSex Chromosomes: Definition, Purpose, Examples - Healthline

   www.healthline.com › health › sex-chromosomes

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   Dec 14, 2023 · Learn how sex chromosomes affect your sexual anatomy and reproductive development. Find out about the different types of sex chromosomes, variations, and intersex conditions.

   • Author: Sian Ferguson

   • How many sexes are there?

     If you look this up, you’ll undoubtedly find a variety of opinions on the matter. Some say there are only two sexes, while others say there are an...
   • How many people are born intersex?

     As many as 1 in 100 people are born with a difference in sex development (DSD), which is another term for intersex. According to the Intersex Socie...
   • What are karyotypes?

     Your karyotype is your complete set of chromosomes. A karyotype is used to visualize the appearance of your chromosomes, including the size, number...

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9. www.khanacademy.org › science › ap-biologySex chromosomes & X-linked inheritance (article) - Khan Academy

   www.khanacademy.org › science › ap-biology

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   Learn how sex chromosomes (X and Y) determine biological sex and affect gene inheritance patterns in humans and other organisms. Explore examples of X-linked genes, disorders, and how they differ from autosomal genes.

10. en.wikipedia.org › wiki › Sex_chromosomeSex chromosome - Wikipedia

    en.wikipedia.org › wiki › Sex_chromosome

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    46,XX testicular disorder of sex development, also called XX male syndrome, is a condition in which individuals with two X chromosomes in each cell, the pattern normally found in females, have a male appearance.