基因选择中性学说数学模型[目的]探讨关于自然选择单位的4种学说的内在联系.[方法]通过建立数学模型,探讨遗传群体杂合子适合度取值范围,阐明自然选择单位的4种学说的内在联系.[结果]根据研究中建立的数学模型,发现突变基因必须在纯和杂2方面都满足自然选择的要求,而且能在杂合状态下表现出高适合度,才更容易被保留下来,...
Theresultof thisstudysuggestedthatthefourtheoriesonnaturaIselectionunitcanco—exist . and sharecommonpremises. KeywordslndividuaIselection;Collectiveselection;Geneticselection;NeutraIthegn; MathematicaImodeI ’ SincetheproposalofNatural SelectionTheory,therehave b eenmanyconflictingtheories ontheunitofnaturaIs...
Human lateral preferences, such as handedness and footedness, have interested researchers for decades due to their pronounced asymmetries at the population level. While there are good estimates on the prevalence of handedness in the population, there is no large-scale estimation on the prevalence of...
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You can find the connecting room info by hovering over "See all room facilities" in the room selection which may be exclusive to certain types of room only. Does Four Seasons Hotel Singapore provide airport transfer? Four Seasons Hotel Singapore offers airport transfer service upon request with ...
In goat breeds, the domestication followed by artificial selection for economically important traits have shaped genetic variation within populations, leading to the fixation of specific alleles for specific traits. This led to the formation and evolutio
In each country, older adults aged 60 years or more were randomly invited to participate in the study through the network of each partner (fitness clubs, senior universities, other community organisations working with the elderly, etc.). In addition to the age, the following selection criteria ...
The History of Beverly Wilshire,A Four Seasons Hotel Come and celebrate our storied Hotel with us by exploring this curated selection of historical highlights, dating back to 1928. Details The Pool Cool off beneath the California sun with a dip in our Mediterranean-style, outdoor pool, where ...
The original use of the "carbon debt" concept referred to per- manent clearing of natural forest making way for fields for energy crops. The carbon debt is the gap between this one-time release of CO2 from forest carbon pools and the cumulated emissions that are avoided by substitut- ...
for measuring the energy efficiency. In general, a lower PUE indicates higher energy efficiency. The PUE value itself is tied to construction scale, usability, power density, and of course, the natural climate of the local area. However, the greatest determining factor is site selection. ...