Exam 2 Flashcards
2 Breed specific AxB
Individual HV: 100% Maternal HV: 0% Complementarity: full Replacement females: no Management Difficulty: low Uniformity of Progeny: high
3 breed specific C x AB
Individual HV: 100% Maternal HV: 100% Complementarity: full Replacement females: no Management Difficulty: low Uniformity of Progeny: high
Backcross
Individual HV: 50% Maternal HV: 100% Complementarity: some Replacement females: no Management Difficulty: low Uniformity of Progeny: high
2 breed rotation
Individual HV: 67% Maternal HV: 67% Complementarity: none Replacement females: yes Management Difficulty: medium Uniformity of Progeny: low
3 breed rotation
Individual HV: 86% Maternal HV: 86% Complementarity: none Replacement females: yes Management Difficulty: high Uniformity of Progeny: low
Composite ⅜ A - ⅝ B
Individual HV: variable 40-80% Maternal HV: variable 40-80% Complementarity: none Replacement females: yes Management Difficulty: low Uniformity of Progeny: high
3 breed rotaterminal
Individual HV: 100% Maternal HV: 67% Complementarity: full Replacement females: yes Management Difficulty: high Uniformity of Progeny: medium
Half sib mating
R= .25
F=.125
Full sib mating
R= .5 F= .25
Sire x Daughter mating
R= .5 F= .25
Inbreeding
The mating of relatives
Common ancestor
An ancestor common to more than one individual
Prepotency
The ability of an individual to produce progeny whose performance is especially is especially like its own and or is especially uniform
Inbreeding depression
The reverse of hybrid vigor- a decrease i the performance of inbreds, most noticeably in traits like fertility and survivability
Hybrid vigor
An increase in the performance of hybrids over that of purebreds, most noticeably in traits like fertility and survivability
Fitness trait
The ability of an individual and its corresponding phenotype and genotype to contribute offspring to the next generation
Inbreeding coefficient
A measure of the level of inbreeding in an individual
Identical by decent
Two genes are identical by descent if they are copies of a single ancestral gene
Alike in state
Genes that are alike in state function the same and have exactly or almost exactly the same chemical structure
Wright’s Coefficient
A measure of pedigree relationship
Base population
The population of animals whose parents are either unknown or ignored for the purposes of inbreeding or relationship calculation
Linebreeding
The mating of individuals within a particular line, designed to maintain a substantial degree of relationship to a highly regarded ancestor or group of ancestors without causing high levels of inbreeding
Pure breeding
The mating of purebreds of the same breed
Outbreeding
The mating of unrelated individuals