Trending Of What Is Heterosis Breeding Best Resolution Image. Heterosis breeding is here to stay as a potent genetic tool for exploiting the predominantly non-additive gene action. Heterosis or hybrid vigor is the performance advantage crossbreds wield over the average of their straightbred parents.
Suppose the genetic constitution of female parent is AABBccdd and that of male parent as aabbCCDD. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits.
According to dominance hypothesis heterosis is the result of accumulation of dominant genes in F 1 from both the parents.
Because of heterosis most commercial swine producers use crossbred pigs rather than purebreds as market animals. Heterosis and complementarity are powerful forces that combine to produce the total advantage of beef cattle crossbreeding. If the performance of the crossbred animal is different from the mid-parent average for a particular trait heterosis exists for that trait. Heterosis or hybrid vigour describes the superior performance of heterozygous hybrid individuals compared with their homozygous parental inbred lines.