Results 21 to 30 of about 35,196 (272)

Does haplodiploidy purge inbreeding depression in rotifer populations? [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND:Inbreeding depression is an important evolutionary factor, particularly when new habitats are colonized by few individuals. Then, inbreeding depression by drift could favour the establishment of later immigrants because their hybrid offspring ...
Ana M Tortajada   +2 more
doaj   +1 more source

Genomic patterns of homozygosity and inbreeding depression in Murciano-Granadina goats

open access: yesJournal of Animal Science and Biotechnology, 2022
Background Inbreeding depression can adversely affect traits related to fitness, reproduction and productive performance. Although current research suggests that inbreeding levels are generally low in most goat breeds, the impact of inbreeding depression
María Gracia Luigi-Sierra   +10 more
doaj   +1 more source

SELECTION AND INBREEDING DEPRESSION: EFFECTS OF INBREEDING RATE AND INBREEDING ENVIRONMENT [PDF]

open access: yesEvolution, 2006
The magnitude of inbreeding depression in small populations may depend on the effectiveness with which natural selection purges deleterious recessive alleles from populations during inbreeding. The effectiveness of this purging process, however, may be influenced by the rate of inbreeding and the environment in which inbreeding occurs.
William R, Swindell, Juan L, Bouzat
openaire   +2 more sources

Exploring the relationship between tychoparthenogenesis and inbreeding depression in the Desert Locust, Schistocerca gregaria [PDF]

open access: yes, 2017
Tychoparthenogenesis, a form of asexual reproduction in which a small proportion of unfertilized eggs can hatch spontaneously, could be an intermediate evolutionary link in the transition from sexual to parthenogenetic reproduction.
Blondin, Laurence   +4 more
core   +1 more source

Inbreeding depression in the wild [PDF]

open access: yesHeredity, 1999
Despite its practical application in conservation biology and evolutionary theory, the cost of inbreeding in natural populations of plants and animals remains to a large degree unknown. In this review we have gathered estimates of inbreeding depression (delta) from the literature for wild species monitored in the field. We have also corrected estimates
P, Crnokrak, D A, Roff
openaire   +2 more sources

Reproductive success through high pollinator visitation rates despite self incompatibility in an endangered wallflower [PDF]

open access: yes, 2016
PREMISE OF THE STUDY: Self incompatibility (SI) in rare plants presents a unique challenge—SI protects plants from inbreeding depression, but requires a sufficient number of mates and xenogamous pollination. Does SI persist in an endangered polyploid? Is
Herman, Julie A.   +6 more
core   +2 more sources

On the expected relationship between inbreeding, fitness, and extinction

open access: yesGenetics Selection Evolution, 2006
We assessed the expected relationship between the level and the cost of inbreeding, measured either in terms of fitness, inbreeding depression or probability of extinction. First, we show that the assumption of frequent, slightly deleterious mutations do
Couvet Denis, Theodorou Konstantinos
doaj   +1 more source

The environmental dependence of inbreeding depression in a wild bird population. [PDF]

open access: yesPLoS ONE, 2007
Inbreeding depression occurs when the offspring produced as a result of matings between relatives show reduced fitness, and is generally understood as a consequence of the elevated expression of deleterious recessive alleles.
Marta Szulkin, Ben C Sheldon
doaj   +1 more source

Selection responses of means and inbreeding depression for female fecundity in Drosophila melanogaster suggest contributions from intermediate-frequency alleles to quantitative trait variation [PDF]

open access: yes, 2007
The extent to which quantitative trait variability is caused by rare alleles maintained by mutation, versus intermediate-frequency alleles maintained by balancing selection, is an unsolved problem of evolutionary genetics.
Borthwick, Helen   +2 more
core   +1 more source

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