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Table 5 Hypothetical example of the dosage effect in terms of the breeding values of the parental lines for three different scenarios relating to the balance of parental performance

From: Ploidy elicits a whole-genome dosage effect: growth of triploid Atlantic salmon is linked to the genetic origin of the second maternal chromosome set

 

Scenario 1

Scenario 2

Scenario 3

Breeding pair

♀ × ♂

♀ × ♂

♀ × ♂

Breeding valuea

1 3

2 2

3 1

2n offspring breeding valueb

2

2

2

3n offspring breeding valuec

1.66

~2

2.33

  1. Scenario 1 where the dam performance is lower than the sire performance; Scenario 2 where parent performance is equal; and Scenario 3 where the dam performance is superior to the sire
  2. a The breeding value here is a hypothetical value given to the dam (♀) and sire (♂) to represent their growth performance, where 1 < 2 < 3, such that 1 would be a poor performing individual, 2 would be an average performance, and 3 would be a superior preforming individual
  3. b This value represents the growth performance of a diploid offspring where 50% comes from the dam and 50% comes from the sire
  4. c This value represents the growth performance of a triploid offspring where 66% comes from the dam and 33% comes from the sire