Clavicles (collar bones) are variably present in mammals. Furculae (wishbones)--which may or may not be homologous with clavicles--are variably present and/or fused in birds and present in theropod dinosaurs. In this overview the development of clavicles and furculae is discussed with special attent
โฆ LIBER โฆ
The molecular evolution of ZFY-related genes in birds and mammals
โ Scribed by J. Lanfear; P. W. H. Holland
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 497 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0022-2844
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A recent hypothesis suggests that resting metabolic rate, measured as energy expended per unit body mass per unit time, might be implicated in the rate of nucleotide substitution in animals. Using relative rate tests on DNA-DNA hybridization data from birds, we show that generation time is significa