Is hybrid vigour lost upon inbreeding? ( with explanation)
Answers
Answer:
When a population is small or inbred, it tends to lose genetic diversity. The loss of fitness is due to loss of genetic diversity. Inbred strains tend to be homozygous for recessive alleles. ... Heterosis or hybrid vigor, on the other hand, is the tendency of outbred strains to exceed both inbred parents in fitness
Answer:
Heterosis (also known as Hybrid Vigour) and inbreeding are important in pig production. Heterosis comes from cross-breeding while inbreeding occurs in purebreds. They have opposite effects, the former improves performance and the latter decreases performance, particularly in reproductive traits.
Explanation:
Genes are inherited in pairs, one from each parent. Heterosis increases the number of different allele pairs and increases heterozygosity, resulting in the suppression of undesirable recessive alleles from one parent by dominant alleles from the other parent. Inbreeding results in homozygosity, which increases the chances of offspring being affected by recessive or deleterious traits.