Biological adaptation is the evolutionary process through which heritable traits that enhance an organism’s fitness become more prevalent in a population over generations under specific environmental conditions. It operates primarily via natural selection acting on genetic variation, including mutations, recombination, and gene flow, and is constrained by developmental, genetic, and phylogenetic factors. Adaptations can be morphological, physiological, or behavioral and are typically characterized by increased survival or reproductive success in a given niche. The process is dynamic and context-dependent, such that traits advantageous in one environment may be neutral or deleterious in another, contributing to diversification and speciation.
Cells experience many different types of stress, such as starvation or stress caused by too much salt or too high a temperature. Insulin signals respond to such stress signals by sending the protein DAF-16 into the cell nucleus ...
Cell & Microbiology
Jan 8, 2026
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113
Two new studies into lizard colors reveal how one species maintains its colorful diversity while others are losing their ancient colors. And the changes are being driven by the biological equivalent of rock-paper-scissors.
Large wild mammals—from elephants to antelopes—are already struggling to cope with global warming. Now new research shows that even the small creatures adapted to harsh, arid landscapes may be reaching their limits.
Plants & Animals
Jan 5, 2026
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24
Winter is hard, and for wildlife in Colorado, it's even harder. To survive, many species have developed adaptations over hundreds of thousands of years that allow them to weather the storms, including hibernation, thicker ...
Plants & Animals
Dec 31, 2025
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361
Understanding the evolution of insect mating behavior is essential for explaining how early insects adapted to life on land. A new study examines Petrobiellus akkesiensis, a rare jumping bristletail, and reveals that its ...
Plants & Animals
Dec 30, 2025
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22
Every cell depends on proteins to function and stay healthy. These proteins are made inside the cell from amino acids, but cannot simply accumulate inside the cell forever. Once they have done their job or become damaged, ...
Cell & Microbiology
Dec 23, 2025
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25
An international collaboration study reveals how evolution and locomotion patterns, such as bipedalism, shaped bone structures through proteins present in the bone matrix. The findings of the study, led by researchers from ...
Evolution
Dec 18, 2025
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15
Every living being must cope with a changing world—summer gives way to winter, one year it floods and the next is a drought. It's obvious that populations of plants and animals must constantly face new challenges, says University ...
Evolution
Dec 17, 2025
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131
A plant's success may depend on how well the three sets of genetic instructions it carries in its cells cooperate, according to a new study led by plant scientists at Penn State. In an analysis of the hybrids of two crossbred ...
Plants & Animals
Dec 17, 2025
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33
Two new studies show how climate influences behavior, communication, and genome evolution—driving adaptation in a long-running conflict.
Evolution
Dec 15, 2025
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41
