Navigation Links
Reproduction


Reproduction is the creation of one thing as a copy of, product of, or replacement for a similar thing, e.g. photocopying and the making of replicas.

It is perhaps most commonly used in the context of biological reproduction and sex:

  • Sexual reproduction is a biological process by which organisms create descendants through the combination of genetic material. These organisms have two different adult sexes, male and female.
  • Asexual reproduction is a biological process by which an organism creates a genetically similar copy of itself without the combination of genetic material with another individual. For example, the Hydra (invertebrates of the order Hydroidea) and yeast are able to reproduce by budding. These organisms do not have different sexes, and they are capable of "splitting" themselves into two or more parts and regrow their body parts. Some 'asexual' species, like hydra and jellyfish, may also sexually reproduce. Most plants are capable of vegetative reproduction. Other ways of asexual reproduction are binary fission, fragmentation and spore formation .

There are a wide range of reproductive strategies employed by different species.

Some animals, like the human (sexually mature after adolescence) and Northern Gannet (5-6 years), produce few offspring. Others reproduce quickly, but unless raised in an artificial environment, most offspring do not survive to adults. A rabbit (mature after 8 months) produces 10 - 30 offspring per year, a Nile Crocodile (15 years) produces 50, and a fruit fly (10-14 days) produces up to 900. Both strategies can be favoured by evolution: animals with few offspring can spend time nurturing and protecting them, hence greatly decreasing the need to reproduce; on the other hand, animals with many offspring do not need to spend parental energy on nurturing, allowing more energy to be devoted to survival and more breeding.

These two strategies are known as K-selection (few offspring) and r-selection (many offspring). Which strategy is favoured depends on a wide range of circumstances.


In Marxian economics, reproduction can refer to the worker's daily reproduction of his own labor capacity. This consists of the tasks of everyday existence — food preparation, laundry and so forth — that maintain him and his ability to show up at his job as required. Much of this domestic labor has historically been the responsibility of women; thus it is of particular interest in feminist economics.

See also

External link



Asexual Reproduction


'"/>


(Date:4/13/2015)... According to a recently ... & Opportunities, 2020", the global biometrics market is ... till 2020. The biometrics market is garnering attention ... review of biometric management systems. The constant development ... greater efficiency, are resulting in increasing installation of ...
(Date:4/10/2015)... Research and Markets ( http://www.researchandmarkets.com/research/cjk4gb/security ... Competitive Profiles - NEC" report to their offering. ... will continue to supply a range of IT security ... company focus on the development of a Big Data ... in the Asia-Pacific region is ...
(Date:4/8/2015)... N.C. , April 8, 2015  Infinisource, ... solutions and services, and Morpho, a leading supplier ... partnership to produce the market,s most advanced biometrically-enabled ... Infinisource,s iSolved NXG time clock is setting a ... and labor data for the small and mid-size ...
Breaking Biology News(10 mins):Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2NEC Security Competitive Profile 2015 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 3
... NEW YORK and LEON, GUANAJUATO MEXICO, Aug. 18 ... control and identity management market, announced today that it ... in Leon, Guanajuato, Mexico. Portoss, a Leon-based company, specializes ... This latest partnership between Portoss and the City of ...
... AMES - A special set of sugars found ... body,s natural defenses as well as vaccines, say two ... a first step in understanding a disease family that ... vaccines or cures. Nicola Pohl, professor of chemistry, ...
... In findings that push back the clock on the ... Earth, Princeton scientists may have discovered the oldest fossils ... living in ocean reefs about 650 million years ago. ... deposit in South Australia, represent the earliest evidence of ...
Cached Biology News:Global Rainmakers Delivers World Class Iris Capability for Portoss 2Global Rainmakers Delivers World Class Iris Capability for Portoss 3ISU researchers discover cause of immune system avoidance of certain pathogens 2ISU researchers discover cause of immune system avoidance of certain pathogens 3Possible discovery of earliest animal life pushes back fossil record 2Possible discovery of earliest animal life pushes back fossil record 3Possible discovery of earliest animal life pushes back fossil record 4
Other biology definitionOther Tags