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Victorian government portal for older people, with information about government and community services and programs. Type a minimum of three characters then press UP or DOWN on the keyboard to navigate the autocompleted search results. Menopause occurs when your ovaries stop releasing eggs and your monthly period stops. Perimenopause is the time leading up to menopause, when your ovaries are running out of eggs. It is generally advised you use contraception until at least one year after your periods have ceased, if you are over the age of This is because a pregnancy late in your reproductive life increases your risk of health problems, and the risk of birth defects for your child.
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Pediatric Differences in Sex Development

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Sex chromosome evolution in parasitic nematodes of humans | Nature Communications

When a child's gender is in question at birth, because genitals may not appear clearly male or female, the child is said to have ambiguous genitalia. Ambiguous genitalia can be a confusing and scary experience for parents, but these children are usually healthy. Ambiguous genitalia is more common than most people realize. Early in fetal development, the tissue that will become the gonads ovaries or testes is identical and has the potential to become either ovaries or testes, depending on the genetics of the fetus.
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Sex chromosome evolution in parasitic nematodes of humans

Even though all men are "supposed" to be sexual experts, let's face it: no one is born knowing everything. At some point you need information about the physical problems associated with sexual organs, sexual intercourse and birth control, sexually transmitted diseases STDs and many other issues. To maintain sexual health you need complete and correct information so you can make informed decisions about sex. Also, you can learn to prevent many of the problems which can occur in male reproductive organs.
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Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete such as a sperm or egg cell with a single set of chromosomes haploid combines with another to produce an organism composed of cells with two sets of chromosomes diploid. Sexual reproduction does not occur in prokaryotes organisms without cell nuclei , but they have processes with similar effects such as bacterial conjugation , transformation and transduction , which may have been precursors to sexual reproduction in early eukaryotes. In the production of sex cells in eukaryotes, diploid mother cells divide to produce haploid cells known as gametes in a process called meiosis that involves genetic recombination. The homologous chromosomes pair up so that their DNA sequences are aligned with each other, and this is followed by exchange of genetic information between them. Two rounds of cell division then produce four haploid gametes, each with half the number of chromosomes from each parent cell, but with the genetic information in the parental chromosomes recombined.
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