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This condition occurs approximately once in every 4, births. The baby seems Duel sex orgens have a mixture of both female and male parts - for example, they may have both a vulva and testicles. Associated intersex conditions for male babies include hypospadias, where the urethral opening is located in an unusual position such as the underside of the penis. The causes of ambiguous genitalia include genetic variations, hormonal imbalances and malformations of the fetal tissues that are supposed to evolve into genitals.
Tests including ultrasound, x-rays and blood tests are needed before the baby's sex can be identified. Mild forms of ambiguous genitalia may be characterised by a large penis-like clitoris in baby girls or undescended testicles in boys. Sexual determination during embryo development A baby's sex is decided at conception. The mother's egg provides an X chromosome and the father's sperm determines the baby's sex by contributing either an X or Y sex chromosome. An XX embryo is female while an XY embryo is male. A baby who inherits the X chromosome from the father is a genetic female two X chromosomes.
A baby who inherits the Y chromosome from the father is a genetic male one X and one Y chromosome. Male and female sex organs develop from the same tissue. Whether this tissue becomes male organs or female organs depends on the chromosomes and the presence or absence of male hormones.
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In males, a region on the Y chromosome triggers the development of testicles, which produce male hormones. Male genitals develop in response to male hormones from the fetal testicles. In a fetus without a Y chromosome — seex the effects of male hormones — the genitals develop as female. Occasionally, a chromosomal abnormality may make determination of genetic sex complex. The two primary causes of male pseudohermaphroditism are androgen insensitivity syndrome and 5-alpha reductase deficiency. This syndrome is inherited. It is caused by a problem with a gene on the X chromosome. This problem is called X-linked recessive.
Normal male chromosomes Genitals that are ambiguous Children with this condition lack the enzyme 5-alpha reductase. This enzyme is needed to help the male sex organs complete their development. This condition is inherited. It is caused by an autosomal recessive gene.
Mating with a partner is more desirable biologically, as the genetic material of the resultant offspring is varied, but if mating with a partner is not possible, self-fertilization is practiced. The male sexual organ of an adult banana slug is quite large in proportion to its size, as well as compared to the female organ. It is possible for banana slugs, while mating, to become stuck together. If a substantial amount of wiggling fails to separate them, the male organ will be bitten off using the slug's radulasee apophallation. If a banana slug has lost its male sexual organ, it can still mate as a female, making its hermaphroditic quality a valuable adaptation.
The species of colourful sea slugs Goniobranchus reticulatus is hermaphroditic, with both male and female organs active at the same time during copulation. After mating, the external portion of the penis detaches, but is able to regrow within 24 hours.
The sinecure of male hormones banks the penis and much to dance. Male and painless sex photos develop from the same time.
They do not practice self-fertilization, but when they find a mate, the pair takes turns between which one acts as the male and which acts as the female through multiple matings, usually over the course of several nights. Earthworms are another example of a simultaneous hermaphrodite. Although they possess ovaries and testes, they have a protective mechanism against self-fertilization. Sexual reproduction occurs when two worms meet and exchange gametescopulating on damp nights during warm seasons. The ovarian and testicular tissue may be separate, or the two may be combined in what is called an ovotestis. Affected individuals have sex chromosomes showing male-female mosaicism where one individual possesses both the male XY and female XX chromosome pairs.
Most often, but not always, the chromosome complement is 46,XX, and in every such individual there also exists evidence of Y chromosomal material on one of the autosomes any of the 22 pairs of chromosomes other than the sex chromosomes.