Topic 28

Question 1

Quantitative population genetics

Answer 1

characterizes population traits using phenotypic performances or genomic information; It analyses the genetic determination and the environmental impact on the polygenic train, and measure alteration by time

Question 2

Quantitative trait

Answer 2

characteristic trait that can be expressed mathematically e.g. milk yield

Question 3

Polygenic trait

Answer 3

expressed by several genes

Question 4

Phenotypic value (P)

Answer 4

combined effect of the genotypic value (G) and the environmental deviation (E)P=G+E

Question 5

Genotypic value (G)

Answer 5

combined effect of all the genetic effects e.g. mitochondrial genes

Question 6

P=

Answer 6

A+D+I+E; A=Additive effect; D=Dominance effect; I=interaction factor; E=environmental component

Question 7

Genetic effect

Answer 7

just for populations not individuals

Question 8

Valuable traits

Answer 8

Primary, secondary

Question 9

Primary traits

Answer 9

the single target trait of the selection in each specialized utilization type like milk, meat, egg, wool

Question 10

Secondary traits

Answer 10

all the other traits which are helping to realize the primary trait independently from utilization like reproduction, rearing, feed intake

Question 11

QTL

Answer 11

Quantitative Trait Loci; stretches DNA containing or linked to genes that underlie a quantitative trait region in the genome that affects the trait/traits of interest