AGB-0014
QUESTION
A new breed can be evolved by?
OPTIONS
(A) Grading up
(B) Out crossing
(C) Cross-breeding
(D) Inbreeding
ANSWER
(C) Cross-breeding
EXPLANATION
Cross-breeding can combine desirable genes from different breeds and, through selection among the resulting populations, can be used to establish a new breed with a defined combination of characteristics. Grading up mainly replaces the genetic background of non-descript stock with that of an improved breed, outcrossing involves unrelated animals within a breed, and inbreeding increases homozygosity.
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