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Genetics is the branch of biology which deals with heredity and variation in living organisms. The modern science of genetics started with the work of Gregor Mendel in the mid-nineteenth century. He found that organisms inherit traits in a discrete way and the basic units of inheritance are now called genes.
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条目 (5+)
The Time-Honored Urban Activity of Cow Tipping
http://www.truthorfiction.com/rumors/c/cowtipping.htm
The Journal of Syms Covington
http://www.asap.unimelb.edu.au/bsparcs/covingto/contents.htm