Strategies for genetic improvement selection between and within breeds

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Created by: Alex
Created on: 29-05-13 01:25

Backcrossing

To cross (a hybrid) with one of its parents or with an individual genetically identical to one of its parents

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tandem selection

Selection of one trait for one generation followed by a different trait for another generation

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Independent culling levels

Selection of culling based on cattle meeting specific levels of performance for each trait included in the breeder's selection program

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introgression

Infiltration of the genes of one species into the gene pool of another through repeated backcrossing of an interspecific hybrid with one of its parents.

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why mate animals of different breeds/lines/species

Overall efficiency of production species, individuals with intermediate performance between 2 extreme parents, grading up to a new breed, new variation in numerically small breeds, introgression, heterosis

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heterosis

the marked vigor or capacity for growth often exhibited by crossbred animals or plants —called also hybrid vigor

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Other cards in this set

Card 2

Front

tandem selection

Back

Selection of one trait for one generation followed by a different trait for another generation

Card 3

Front

Independent culling levels

Back

Card 4

Front

introgression

Back

Card 5

Front

why mate animals of different breeds/lines/species

Back

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Strategies for genetic improvement selection between and within breeds