Fertilization mode drives sperm length evolution across the animal tree of lifeEvolutionary biologists have endeavoured to explain the extraordinary diversity of sperm morphology across animals for more than a century. One hypothesis to explain sperm diversity is that sperm length is shaped by the ...
R. Evolution of sex chromosome dosage compensation in animals: a beautiful theory, undermined by facts and bedeviled by details. Genome Biol. Evol. 9, 2461–2476 (2017). Article CAS PubMed PubMed Central Google Scholar Ohno, S. Sex Chromosomes and Sex-Linked Genes (Springer, 1967). Bach...
We project the observed variation on the animal tree of life. Finally, we study patterns of evolution in the DNA barcode sequence in Coleoptera and Lepidoptera to gain insight into the possible reasons for the observed differences in their DNA barcode variation. Results Nucleotide and amino acid ...
The Darwin-Bateman paradigm predicts that anisogamy imposes stronger sexual selection on males, which, in turn, drives the evolution of conventional sex roles in terms of female-biased parental care and male-biased sexual dimorphism. Although this paradigm forms the cornerstone of modern sexual ...
The animal kingdom,in all its beauty and diversity (多样性),is like an old tree.Each branch is a family of species (物种),and each leaf is one kind of species.Thanks to British scientist Charles Darwin,we are able to see this beautiful tree of evolution (进化).Born in 1809,young Dar...
Molecular approaches to phylogenetics have proven able to revolutionize our knowledge of organismal evolution. However, with respect to the deepest splits in the metazoan Tree of Life-the relationships between Bilateria and the four non-bilaterian phyla (Porifera, Placozoa, Ctenophora, and Cnidaria)...
they believe that the unit ofnatural selectionis usually the individual and that social behaviour is fraught withcompetition. English naturalistCharles Darwin, who first broughtevolutionby natural selection to the attention of the world, introduced thisparadigmfor thinking about social behaviour, noting th...
Studying the genetic mechanisms of animals in extreme environments is of great importance for understanding their evolution, gaining insights into their unique physiological and biochemical mechanisms, which can contribute to medical advancements, as well as predicting species' responses to future environmenta...
A broad comparative approach could clarify new angles for answering fundamental questions about programmed dormancy evolution. To advance this approach, we present a cross鈥恡axonomic framework describing dimensions that distinguish animal dormancies and provide a set of core traits that animals regulate ...
of selective forces are hypothesized to influence sperm evolution and diversification. However, we currently lack robust examinations of macroevolutionary (i.e. across phyla) patterns of sperm evolution, due largely to the challenges of comparing sperm morphological data across the animal tree of life...