Comparing the flight muscles of different species provided us with a clever way to test the effects of energy use on the evolution of the genome.
It has long been known that birds and bats have small genomes, but the cause was uncertain.
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The size of the heart sets the upper limit for sustained oxygen consumption because it limits the amount of blood code promo stootie that can be pumped with each beat.Natalie had realized that the size of a birds flight muscles determines its capacity for producing bursts of energy, and energy use is hugely important in evolution said Witt, who is the Curator of Birds at UNMs.Natural selection on individuals has led to the observable differences among species, but these are very subtle differences with subtle effects on fitness operating over long stretches of time.Fortunately, because our research is based on MSB specimens, any scientist can try to answer that question by borrowing frozen tissue samples to sequence the very same genomes that we measured.

Does this mean that Olympic athletes might have smaller genomes than other humans in the general population?
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Wright and Witt, along with their colleague Ryan Gregory at the University of Guelph, measured the genome sizes of more than 400 bird species from the MSB collection.
Anne Shepler, university of North Texas, abstract.
Hummingbirds have tiny genomes, as expected for birds that hover.Smaller cells are more efficient for transport of oxygen and fuel.We will sketch the use of Hochschild cohomology in securing PBW theorems, with special interest in groups acting on algebras and cases when the underlying field exhibits troublesome characteristic.According to the work that Wright has done for her dissertation, the flight muscles can weigh up to one-third of a birds body weight, and their bulk allows for intense bursts of energy production.And by leveraging this museum infrastructure at UNM, Wright and Witt have provided a clearer understanding of the causes of genome size variability.

This suggests that intense metabolic activity, such as occurs during flight, has caused the evolution of smaller genomes, said Witt.
Fortunately, our museum here at UNM has bird specimens from all over the world that have been carefully preserved to allow this kind of study.