41) Crossing: continuous hybridization, recombination losses

Question 1

Continuous hybridisation

Answer 1

Criss-cross and rotational breeding

Question 2

Criss-cross

Answer 2

Breeding of crossbred females to purebred males of two different breeds

Question 3

Rotational breeding

Answer 3

• Type of criss-cross
• 3+ breeds

1. Crossbred female (AB) inseminated by a purebred male (C)
2. Next generation (ACB) inseminated by a purebred male (D)
3. Next female generation (ACBD) inseminated by A males

Result: Males and culled females

Question 4

Recombination losses

Answer 4

Loss of heterozygosity due to homologous recombination