"I go through every hive and look to find an unusual breed pattern and make sure the queen bee is OK".
Darwin used the word instinct in a number of different ways to refer to what impels a bird to breed; to a disposition, such as courage or obstinacy in a dog; to selectively bred patterns of behaviour such as the tumbling movements of tumbler pigeons; to feelings such as sympathy in people; and to stereotyped actions such as those employed by honeybees when constructing the cells of a honeycomb.
Many methods have been proposed to scan for selection signatures at the genomic level [ 5] by analysing either within- or across-breeds patterns of diversity by comparing allele or haplotype frequencies and sizes, alleles that are segregating or fixed in populations, and to preferentially detect recent or ancient selection events [ 5- 7].
We then describe how AMY2B copy numbers vary in individuals from 20 dog breeds and find strong breed-dependent patterns, indicating that the ability to digest starch varies both at the breed and individual level.
His much-cited claim to Alabamian history — his successful prosecution of two Ku Klux Klan members who orchestrated the Sixteenth Street Baptist Church bombing, which killed four black girls, in 1963 — was impressive, though, in a state where familiarity and habit breed voting patterns, it was not enough to energize potential voters.
Strong genetic drift associated with the shifting demographic histories of dog breeds is likely to have resulted in breed-specific patterns of copy abundance, but is also possible that regional dietary constraints may have resulted in differential selective regimes that may have shifted average copy numbers among breeds.
For example, an Irish wolfhound that has survived to eight years has a 76% chance of being dead before 10, whereas an eight-year old golden retriever has a 90% chance of surviving to 10. Prospective owners may wish to consider breed-specific patterns of death or disease before choosing a breed.
Intriguingly, EHL pigs have 2 3 fold higher blood cortisol level compared to LW pigs, and glucocorticoid receptor (GR, NR3C1) is expressed in breed-specific patterns in hippocampus [ 9], muscle [ 10], fat [ 11], and liver [ 12].
To study breed-specific patterns of AMY2B variation and to investigate the relationship between copy numbers and diabetes susceptibility, we collected eight dogs each from 19 different dog breeds (Table S2), as well as 19 Greenland Sledge dogs (total number of dogs, n = 171).
