
Tandem selection is a method of artificial selection in which useful traits are selected for sequentially. For instance, one could select for both increased milk yield and increased milk fat content in cows via tandem selection by first selecting those with the best of one trait, say those that produce highest milk yield, and then when that trait ...
Found on
http://en.wikipedia.org/wiki/Tandem_selection

Selection for one trait at a time. When the desired level is reached in one trait, then selection is practiced for a second trait.
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http://www.cattlepages.com/dictionary/

Multiple-trait selection that focuses on one trait at a time.
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http://www.sheepusa.org/
No exact match found.