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Possibility of female becoming a haemoph...

Possibility of female becoming a haemophilic is extremely rare.

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Haemophilia is caused due to X-linked recessive gene. Females have double X chromosomes. Even if she has haemophilic gene on one of her X chromosome, the dominant gene on other X chromosome, suppresses its expression. Female therefore does not become haemophilic. If she inherits haemophilic gene on both of her X charomosomes, this combination becomes lethal. Such embryo is aborted. If born, she dies soon. This makes the possibility of female becoming a haemophilic extremely rare.
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