Grandparent effects (Hawkes, 2010) on allele frequency – i.e. selection acting at the level of extended family or group – could explain fixation of an allele that does not provide a direct advantage to individuals of reproductive age.
In addition to immobilization of solubilized P in microbial biomass, low P concentrations in SA medium despite low medium pH may be explained by fixation of PO4 3− by Al3+ and Fe3+ which may be available at low pH conditions given the high SA concentrations of Al (9.9%, 0.29 g SA Al L−1) and Fe (4.2%, 0.12 g SA Fe L−1).
"She was in love with flaws" is how Fyfield explains this fixation.
AROUND 1971, Bill Gates was trying to explain the fixation that would become his career to his dad.
An event that defines China to this day – that helps to explain its fixation with political stability; its dramatic economic reforms; even, some say, its increased individualism – remains largely taboo.
In this video from BBC archives, Dr Scott explores funerals, fish markets, hair, even the theatre to explain our fixation with owning luxurious goods.
From a selectional perspective, although WGDs can have immediate phenotypic effects (Kennedy et al. 2006; Thompson and Merg 2008), these may not explain the fixation in most cases.
Surgeons want to know about the facial structure, even though 20 years has elapsed since the original description of the ligaments that explain the fixation of the facial soft tissues to key bony landmarks [ 2, 3].
This hypothesis provides a mechanism for the initial stability of the gene expansion but does not explain the fixation of the various copies or the selection pressures that maintain their evolutionary conservation.
The increase of the error rate may exacerbate the frequency of this type of interactions, which are not included in any of the current models developed to explain the fixation of beneficial mutations in asexual populations.
