5,807 results found
    1. Developmental Biology

    Nutritional control of body size through FoxO-Ultraspiracle mediated ecdysone biosynthesis

    Takashi Koyama et al.
    In Drosophila melanogaster, nutrition controls body size by acting through the Forkhead Box class O (FoxO)/Ultraspiracle complex to regulate nutrition-sensitive ecdysone biosynthesis, thereby controlling the switch to stop growth.
    1. Evolutionary Biology

    New footprints from Laetoli (Tanzania) provide evidence for marked body size variation in early hominins

    Fidelis T Masao et al.
    Bipedal footprints made 3.66 million years ago provide the clearest available evidence to date of the occurrence of marked body size variation in Australopithecus afarensis..
    1. Cell Biology
    2. Evolutionary Biology

    TP53 copy number expansion is associated with the evolution of increased body size and an enhanced DNA damage response in elephants

    Michael Sulak et al.
    Elephants escaped enhanced cancer susceptibility by evolving more master tumor suppressor genes.
    1. Developmental Biology
    2. Genetics and Genomics

    Female-biased upregulation of insulin pathway activity mediates the sex difference in Drosophila body size plasticity

    Jason W Millington et al.
    The ability to adjust body size in response to diet is greater in Drosophila females than males because of a sex difference in the nutrient-dependent regulation of the insulin pathway.
    1. Neuroscience

    Body side-specific control of motor activity during turning in a walking animal

    Matthias Gruhn et al.
    Turning in an insect is the combined result of body-side-specific modifications in processing of local sensory feedback, and modification of local central pattern generator activity.
    1. Ecology

    A fitness trade-off between seasons causes multigenerational cycles in phenotype and population size

    Gustavo S Betini et al.
    Seasonal variation in resources causes opposing episodes of selection on body size, which interact with density dependence to influence population dynamics.
    1. Physics of Living Systems

    Body size-dependent energy storage causes Kleiber’s law scaling of the metabolic rate in planarians

    Albert Thommen et al.
    A combination of experimental and theoretical analysis identifies body size-dependent energy storage as the physiological cause of 3/4-power law scaling of the metabolic rate in planarians.
    1. Biochemistry and Chemical Biology

    Evolutionary and functional insights into the mechanism underlying body-size-related adaptation of mammalian hemoglobin

    Olga Rapp, Ofer Yifrach
    Hemoglobin affinity and cooperativity reveal mechanistic insights in how the relation between physiology and evolutionary variations shape a protein's molecular property.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Recurrent loss of HMGCS2 shows that ketogenesis is not essential for the evolution of large mammalian brains

    David Jebb, Michael Hiller
    The evolutionary loss of the main enzyme required for ketone body biosynthesis suggests that alternative strategies to provide energy for large brains during fasting evolved repeatedly in mammals.
    1. Evolutionary Biology
    2. Neuroscience

    Quantitative uniqueness of human brain evolution revealed through phylogenetic comparative analysis

    Ian F Miller et al.
    The exceptionally large size of the human brain is the result of accelerating evolution towards larger brains in hominins, but is not the product of neocortical expansion.

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