Distribution of genetic variance and isolation by distance in two leaf beetle species: Oreina cacaliae and Oreina speciosissima

Article Abstract:

Researchers conducted a study to investigate the distribution of genetic variance in two Oreina leaf beetle species, Oreina cacaliae and Oreina speciosissima. The population of these alpine beetles were sampled in mountains of Western Europe. No overall linkage disequlibrium was found among either one of these species. Extensive heterozygote deficits were found in several samples as reflected by high values and high overall inbreeding coefficients. The high heterozygote deficits are explained by a combination of inbreeding.

Research, Gene expression, Beetles, Isoenzymes, Chrysomelidae

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Galton's law of ancestral heredity

Article Abstract:

Nineteenth-century researcher Francis Galton proposed an offspring received approximately half its total heritage from its immediate parents, one-quarter from the grandparents, and so on. That calculation has been questioned on logical grounds. Although parents do contribute half their germ-plasm to their offspring, this does not require a one-quarter proportion from grandparents, nor do phenotypic and genotypic values follow identical statistical laws.

Beliefs, opinions and attitudes, Heredity, Galton, Francis

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Genetic architecture of differences in oviposition preference between ancestral and derived populations of the seed beetle Acanthoscelides obtectus

Article Abstract:

The contribution of additive, dominance and epistatic genetic effects to the differentiation in oviposition preference between two populations of the seed beetle Acanthoscelides obtectus evolved in the laboratory on bean and chickpea seeds are investigated. The results have shown a positive effect of epistasis on the performance of the second generations of hybrids.

Cash grains, not elsewhere classified, Dry Pea and Bean Farming, Chick Peas, Chickpea, Genetic epistasis, Epistasis, Oviposition

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