Genome size and brain cell density in birds

Brain Size and Evolutionary Diversification in Birds

Dynamics of genome size evolution in birds and mammals.

Genome size in mammals and birds shows remarkably little interspecific variation compared with other taxa. However, genome sequencing has revealed that many mammal and bird lineages have experienced differential rates of transposable element (TE) accumulation, which would be predicted to cause substantial variation in genome size between species. Thus, we hypothesize that there has been covaria...

Genome size, longevity and development time in birds.

Letters Genome size, longevity and development time in birds On the basis of a comparative analysis among species of birds, Monaghan and Metcalfe 1 suggested that longevity and genome size are positively correlated. Although this result is intriguing, a recent comparative study based on a different measure of ageing failed to find a relationship between genome size and senescence in birds, with...

Genome size and wing parameters in passerine birds.

Despite their status as the most speciose group of terrestrial vertebrates, birds exhibit the smallest and least variable genome sizes among tetrapods. It has been suggested that this is because powered flight imposes metabolic constraints on cell size, and thus on genome size. This notion has been supported by analyses of genome size and cell size versus resting metabolic rate and other parame...

Genome size is a strong predictor of cell size and stomatal density in angiosperms.

Across eukaryotes phenotypic correlations with genome size are thought to scale from genome size effects on cell size. However, for plants the genome/cell size link has only been thoroughly documented within ploidy series and small subsets of herbaceous species. Here, the first large-scale comparative analysis is made of the relationship between genome size and cell size across 101 species of a...