Sentence examples for loss of variation from inspiring English sources

This loss of variation in red-eyed males associated with hitchhiking is called a selective sweep (Berry et al. 1991).

The locus near the spreading advantageous eye color mutation loses one of the two alleles initially present, representing a loss of variation near the site of the mutation.

However, since there are no intermediate morphologies among Circum-Arctic and Central American skulls, it is likely that the spread of the highly derived morphology across Circum-Arctic environments is a circumscribed dispersal process operating from Asia to the Americas (and vice versa?), rather than a loss of variation in South America due to the passage across the Isthmus of Panama.

The loss of variation leaves the surviving population vulnerable to any new selection pressures such as disease, climate change or shift in the available food source, because adapting in response to environmental changes requires sufficient genetic variation in the population for natural selection to take place.

In agreement with this prediction, loss of variation is a frequent, although not ubiquitous, feature of introductions [5].

Although, loss of variation of the Y chromosome in the bonobo by a founder effect or genetic drift cannot be excluded, these contrasting patterns might be explained in the context of the species' markedly different social and mating behaviour.

Importantly, the reduction in variation of size distributions could also limit adaptability to future environmental challenges if loss of phenotypic variation reflects loss of genotypic variation.

That variation is maintained in behavioural traits despite the loss of genetic variation at this early stage of invasion is impressive, and may be relevant to the success of the guppy as an invasive species.

Concerning craniofacial variation, there is no conclusive evidence indicating a substantial loss of phenotypic variation in the passage from Asia to the Americas.

The maintenance of large N e and the associated genetic variation is also important in terms of evolution, because loss of genetic variation affects the adaptation capability of a population.

Vitamin D deficiency as a factor in the development of MS has been further implicated by the identification of rare loss-of-function variations in a gene known as CYP27B1 that result in reduced vitamin D levels in the body.