In: Biology
What happened to the adaptive landscape of Daphne over the last years of the study? How does this change relate to hybridization, and how and why do species normally guard against hybridization?
In an evolutionary biology, the adaptive landscapes help in assessing the relationship between the genotypes and its reproductive success. The replication rate of a genotype (fitness) is the height of the landscape, so, the similar genotypes tend to have the same heights and vice versa. The degree of similarly of different possible genotypes and the related fitness value is known as fitness landscape, which is used to explain the flawed forms in evolution.
The changes in the environment, cultural evolution, and natural selection are the key factors in the evolutionary diversification. The long term study on the adaptive landscape of Daphne revealed that evolution occurs by natural selection when the finches’ food supply change during the droughts condition.
Species normally guard against hybridization because they have varied impacts on the speciation. Hybridization may slow or reverse the process of differentiation due to the gene flow and gene recombination.