The widespread occurrence of non-taster alleles at intermediate frequencies, much more common than recessive alleles conferring genetic disease, across many isolated populations, suggests that this polymorphism may have been maintained through balancing selection.
22.
There are also deletions related to resistance against malaria and AIDS . Also, some highly variable segments are thought to be caused by balancing selection, but there are also studies against this hypothesis.
23.
He conducted a 13-week season in Melbourne and a two-month season in Sydney with Verdi's " Aida " as the opener in both cities and a balanced selection of the standard repertoire, including Bizet.
24.
Because traits are selected and not genes, the relationship between genetic diversity and extinction risk can be complex : factors such as balancing selection, cryptic genetic variation, phenotypic plasticity, and degeneracy all potentially play roles.
25.
If your metaphor of choice is the supermarket, we try to stock the shelves with a reasonably balanced selection of meat, potatoes, green vegetables, canned soups, soda pop, and cookies ( that would be the comics ).
26.
They ranged from the inconsequential _ such as the choice of tie for Bush to wear during his acceptance speech _ to the delicately balanced selection of other convention speakers and the oh-so-delicately balanced selection of topics to be discussed.
27.
They ranged from the inconsequential _ such as the choice of tie for Bush to wear during his acceptance speech _ to the delicately balanced selection of other convention speakers and the oh-so-delicately balanced selection of topics to be discussed.
28.
For those planning a white garden, there's one other design quandary lurking among the delphiniums : After you've determined the right setting for your garden, and have chosen a balanced selection of plants, the process of working with white flowers themselves can prove surprisingly tricky.
29.
In collaboration with Yoko Satta and Naoyuki Takahata, they developed a method for estimating the evolutionary rates of the " Mhc " genes and demonstrated that the rate was close to the average rate of most non-" Mhc " genes, and they provided evidence that the " Mhc " genes are subject to balancing selection.
