Why does blending only occur in hybrids?
Answer (3)
Blending occurs as a result of incomplete dominance, meaning that both alleles for a trait are dominant. In order for blending to take place, there must be two different alleles for a trait ; the organism must be hybrid, or heterozygous. This results in a third phenotype, which is a "blend" of the two traits. **If the organism was homozygous, the alleles would be the same, so they would either be both recessive or dominant, no incomplete dominance would occur, and there would be no "blended" phenotype since both alleles were the same.
** Hope this helps :)**
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Blending in hybrids involves the merging of traits from two parent species. Depending on the fitness of the hybrid, species can either diverge further (reinforcement), fuse back into one species, or maintain stability with no real net change. ;
Blending in hybrids occurs due to genetic mixing from two parent species, resulting in traits from both being present in the offspring. The fitness of these hybrids can affect whether they thrive and how the species evolve over time, possibly leading to stability or further divergence. Examples like mules illustrate how hybrid blending produces unique traits from parent species, though sometimes with limitations like sterility.
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