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( Reproductive)
Reproduction is the biological process by which new individual organisms are produced. Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. The known methods of reproduction are broadly grouped into two main types sexual and asexual. In asexual reproduction, an individual can reproduce without involvement with another individual of that species. The division of a bacterial cell into two daughter cells is an example of asexual reproduction. Asexual reproduction is not, however, limited to single-celled organisms. Most plants have the ability to reproduce asexually. Sexual reproduction requires the involvement of two individuals, typically one of each sex. Normal human reproduction is a common example of sexual reproduction. Asexual reproduction is the process by which an organism creates a genetically-similar or identical copy of itself without a contribution of genetic material from another individual. Bacteria divide asexually via binary fission; viruses take control of host cells to produce more viruses; Hydras (invertebrates of the order Hydroidea) and yeasts are able to reproduce by budding. These organisms do not have different sexes, and they are capable of "splitting" themselves into two or more individuals. Some 'asexual' species, like hydra and jellyfish, may also reproduce sexually. For instance, most plants are capable of vegetative reproduction—reproduction without seeds or spores—but can also reproduce sexually. Likewise, bacteria may exchange genetic information by conjugation. Other ways of asexual reproduction include parthogenesis, fragmentation and spore formation that involves only mitosis. Parthenogenesis (from the Greek pa?????? parthenos, "virgin", + ???es?? genesis, "creation") is the growth and development of embryo or seed without fertilization by a male. Parthenogenesis occurs naturally in some species, including lower plants (where it is called apomixis), invertebrates (e.g. water fleas, aphids, some bees and parasitic wasps), and vertebrates (e.g. some reptiles,[1] fish, and, very rarely, birds[2] and sharks[3]). It is sometimes also used to describe reproduction modes in hermaphroditic species which can self-fertilize.
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Reproductive Subcategories
Reproductive Articles
Sexual and Reproductive Problems by Francis Adam
A man's reproductive organs are responsible for producing the male sex hormone testosterone, and for the manufacture and storage of sperm. The organs are mostly outside the body and consist of the penis and the testes or testicles.
The penis ...
Menopause as a physiological and social women's problem by Devin Greenfield
Menopause is inevitable for every woman. But for every young woman it always seems to be distant and is associated rather with her mother or her aunt. Most of women take it as a border dividing maturity and old age. But they react differently to comi...
What Every Woman Ought to Know to Have Healthy, Natural, Effortless, Drug-Free Fertility and Menstru by Alisa Vitti
What Every Woman Ought to Know to Have Healthy, Natural, Effortless, Drug-Free Fertility and Menstruation Treatment vs. Healing Women with menstrual and gynecological problems often find that they do not receive optimal nurtu...
Women's Reproductive Health is as Important as Other Aspects of Her Health by Roland Jefferson
Women’s reproductive health is often as important as other aspects of their health and they need to gain a better perspective of their reproductive system to enable them to understand just how sensitive their reproductive organs really are. A woman w...
What Girls Should Know? by Julia Johnson
Girls believe, or better say, perceive many things about reproductive health that is simply not true. They are nothing more than mere myths. Following are some of the facts that girls must know in order to have a better and protected sex life. ...
Things you should know to protect from STD's or Sexually transmitted diseases by olivia andrews
Most of the women die of poor reproductive health resulting unwanted pregnancies or because of sexually transmitted diseases. Sexually transmitted disease, as the term indicates is any sort of venereal disease caused due to sexual intercourse or othe...
NaProTechnology: The Effect of Insulin Resistance in Female Reproductive Function by Paddy Jim Baggot
Copyright 2006 Paddy Jim Baggot
NaProTechnology is a new medical science whereby the diagnostic and therapeutic energies of the physician are directed toward the identification and treatment of reproductive and gynecologic problems in a manner ...
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