BIRTH-ORDER DIFFERENCES CAN DRIVE NATURAL SELECTION ON AGING
نویسندگان
چکیده
منابع مشابه
Genetic Ancestry and Natural Selection Drive Population Differences in Immune Responses to Pathogens
Individuals from different populations vary considerably in their susceptibility to immune-related diseases. To understand how genetic variation and natural selection contribute to these differences, we tested for the effects of African versus European ancestry on the transcriptional response of primary macrophages to live bacterial pathogens. A total of 9.3% of macrophage-expressed genes show ...
متن کاملCan intraspecific competition drive disruptive selection? An experimental test in natural populations of sticklebacks.
Theory suggests that frequency-dependent resource competition will disproportionately impact the most common phenotypes in a population. The resulting disruptive selection forms the driving force behind evolutionary models of niche diversification, character release, ecological sexual dimorphism, resource polymorphism, and sympatric speciation. However, there is little empirical support for the...
متن کاملAging: The Fading Signal of Natural Selection
otropy between reproduction and survival in turn adjusts the timing of the late life plateaus comprise a most striking confirmation of the evolutionary approach. Despite these predictive successes, aging continues to be almost reflexively thought of by many as the inexorable accumulation of cellular and physiological damage and wear with age. Even researchers who know of the decline of Hamilton...
متن کاملNatural selection on floral morphology can be influenced by climate.
Climate has the potential to influence evolution, but how it influences the strength or direction of natural selection is largely unknown. We quantified the strength of selection on four floral traits of the subalpine herb Ipomopsis sp. in 10 years that differed in precipitation, causing extreme temporal variation in the date of snowmelt in the Colorado Rocky Mountains. The chosen floral traits...
متن کاملCan natural selection favour altruism between species?
Darwin suggested that the discovery of altruism between species would annihilate his theory of natural selection. However, it has not been formally shown whether between-species altruism can evolve by natural selection, or why this could never happen. Here, we develop a spatial population genetic model of two interacting species, showing that indiscriminate between species helping can be favour...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Evolution
سال: 2014
ISSN: 0014-3820
DOI: 10.1111/evo.12319