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  • Understanding Sex Determination: Chromosomes, Hormones & Genetics
    Sex is determined by chromosomes. Humans have 23 pairs of chromosomes, one of which determines sex. Females have two X chromosomes (XX), and males have one X chromosome and one Y chromosome (XY).

    There are also other factors that can influence sex, such as hormones and genes. Hormones are chemical messengers that control many different things in the body, including growth, reproduction, and mood. There are two main types of hormones that determine sex: estrogen and testosterone. Estrogen is a female hormone, and testosterone is a male hormone. The balance of these two hormones can determine whether a person is male or female.

    Genes also play a role in determining sex. There are certain genes that are found only in males or females. The presence or absence of these genes can determine a person's sex.

    Ultimately, the combination of chromosomes, hormones, and genes determines whether a person is male or female.

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