Heredity (the adjective is hereditary) is the transfer of characteristics from parent to offspring, either through their genes or through the social institution called inheritance (for example, a title of nobility is passed from individual to individual according to relevant customs and/or laws).

Biology

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In biology, heredity refers to the transfer of biological characteristics from a parent organism to offspring, and is practically a synonym for genetics, as genes are now recognized as the carriers of biological information. In humans, defining which characteristics of a final person are due to heredity and which are due to environmental influences is often controversial especially regarding complex traits such as intelligence and race. (See also the nature versus nurture debate.)

History of heredity in biology

It was apparent to ancient humans that offspring resembled their parents. For example, Genesis 30-46 tells how Jacob and Laban split their sheep into white and speckled varieties so they could distinguish the two to ensure none were later stolen. Although it was clear that traits were hereditary, the precise mechanism of heredity was not clear.The Bible's understanding of heredity was primitive at best. The same passage in Genesis suggests that spotted sheep are produced by rams & ewes mating in front of black & white tree branches.

Various hereditary mechanisms were envisaged without being properly tested or quantified. These included blending inheritance and the inheritance of acquired traits. Nevertheless, people were able to develop domestic breeds of animals as well as crops through artificial selection. The inheritance of acquired traits also formed a part of early Lamarckian ideas on evolution.

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nw: Bloodline (Hellraiser 4) #lihinw
Lihi (Lihi Lasslo) Thu, 10 Dec 2009 21:53:00 -0000
nw: Bloodline (Hellraiser 4) #lihinw
Watched Hellraiser: Bloodline, the second "Alan Smithee" movie I've sat all the way through. It's definitely not boring.
whatalanwatches (Alan Dorich) Tue, 08 Dec 2009 00:47:15 -0000
Watched Hellraiser: Bloodline, the second "Alan Smithee" movie I've sat all the way through. It's definitely not boring.
@rockte_x http://www.dospuntocerovision.com/2008/05/hellraiser-iv-bloodline.html
MANUELINLIN (MANUEL ACOSTA N.) Mon, 07 Dec 2009 06:48:48 -0000
@rockte_x http://www.dospuntocerovision.com/2008/05/hellraiser-iv-bloodline.html

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