3. Breeding value calculation Flashcards
Which allelic interaction will not cause deviation from the expected performance?
pleiotropy
additive interaction at the same locus
epistasis (interlocal interaction)
dominant/recessive interaction at the same locus
additive interaction at the same locus
Of what is the abbreviation BLUP?
Best Linear Unbiased Prediction
Best Linear Conformation Description
Bull Line Unbiased Prediction
Bovine Leukocyte Adhesion Deficiency
Best Linear Unbiased Prediction
Which is an example for multiple threshold traits?
bone break
polydactyly
scrapie
mortality
scrapie
Which statement is improper regarding the heritability estimate?
the repeatability is its plateau
it is abbreviated as “h2”
it was discovered by Ch. Darwin
it is defined as the regression of the offspring on their parents
it was discovered by Ch. Darwin
Which parameter does not depend on the population mean?
Variance
Distribution
Individual deviation
Standard deviation
Distribution
Which is untrue for the genetic merit?
its value is depending on the actual environment
it is a theoretical value
it is the sum (after the number of gene loci) of the calculated averages according to the additive- and non-additive allelic effects in each loci
it remains constant in the life
its value is depending on the actual environment
What is not valid for the valuable traits?
Economically important traits are recorded and serves as basis for selection
Secondary trait - all the other traits which are helping to realise the primary trait independently from the utilization type
Computed traits are unrealistic for the herd improvement because these are not directly recordable
Primary trait – the single target trait of the selection in each specialised utilization type
Computed traits are unrealistic for the herd improvement because these are not directly recordable
Which is not true for the correlation coefficient?
for its estimation the covariance (a measure of how much the two traits change together) is used
it describes the strength of the association between two quantitative traits
its values got in negative range refer to lack of association
its largest theoretical value is +1.00
its values got in negative range refer to lack of association
Which is true for the breeding value?
it is a theoretical value
it is a constant value
it does not changes according to the value (genetic merit) of the mating partners
it is a deviation of the individual genetic merit from the mean genetic merit of a reference population
it is a deviation of the individual genetic merit from the mean genetic merit of a reference population
Which is true for the special breeding value
it is known also as selection index
it is a certain type of breeding value when next to the additive gene effects the non-additive gene effects (dominancy, epitasis) too are regarded in the computation (it has great importance in the hybridization)
it is a commonly used type of breeding value when only the additive gene effects are taken into consideration during the calculation process
it is a complex type of breeding value established for more traits simultaneously, which is achieved upon the base of a linear combination of in the breeding goal declared valuable traits
it is a certain type of breeding value when next to the additive gene effects the non-additive gene effects (dominancy, epitasis) too are regarded in the computation (it has great importance in the hybridization)
