Quiz 12

Question 1

Genetic prediction simply refers to…

Answer 1

estimation of breeding values (BV)
progeny differences (PD)
producing abilities (PA)

Question 2

To predict a value (EBV, MPPV, etc.), we need:

Answer 2

regression coefficient(s)
phenotypic values (performance records)
means (averages)

Question 3

BLUP (best linear unbiased prediction)

Answer 3

a method of genetic prediction that is particularly appropriate when performance come from genetically diverse contemporary groups

Question 4

Statistical model

Answer 4

a mathematical representation of animal performance

Question 5

Animal model

Answer 5

an advanced statistical model for genetic prediction that is issued for all animals in a population

Question 6

Field data

Answer 6

information that is reported by producers to government agencies for use in genetic prediction

Question 7

EPD (expected progeny difference)

Answer 7

expected difference between the mean performance of the individual’s progeny and the mean performance of all progeny

Question 8

Types of EPDs (4)

Answer 8

1. parent EPD: an EPD for an animal with progeny data
2. non-parent EPD: an EPD for an animal without progeny data
3. interim EPD: an updated EPD calculated between BLUP analyses that incorporated new information
4. pedigree EPD: an EPD based only on pedigree data

Question 9

ACC (accuracy)

Answer 9

correlation between the estimated and the true unknown value

Question 10

PC (possible change)

Answer 10

indicates the potential amount of change in a prediction