handout15 - Lecture 15 Breeding Values Genotype B1B1 B1B2...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Lecture 15 Breeding Values Genotype Frequency Phenotype Genetic Value B 1 B 1 p 2 P 11 V 11 B 1 B 2 2pq P 12 V 12 B 2 B 2 q 2 P 22 V 22 P ij = mgt + V ij mgt = (P 11 + P 22 ) / 2 m = mgt + (p - q) V 11 + 2pq V 12 (if equil) AGV Genetic Value The contribution of the genotype to the expression of a characteristic Scenario: V 11 = V 12 (complete dominance) Performance is equal. P 11 = P 12
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Two components for a single locus: 1) value of individual alleles (B 1 vs. B 2 -- additive or breeding value) 2) value of the allele combination in each individual (dominance value) Genetic Value ANIMAL GENETIC VALUE OWN PERFORMANCE BREEDING VALUE PROGENY Parents can only pass on individual genes, not combinations. To assess the value of an animal as a parent, we evaluate the value of the genes it will transmit. Breeding Value (Additive Genetic Value) Transmitting Ability = 1/2 BV -- average value of gametes produced by an individual EBV -- Estimated Breeding Value ETA -- Estimated Transmitting Ability
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 5

handout15 - Lecture 15 Breeding Values Genotype B1B1 B1B2...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online