New research shows how one genetic switch lets female swallowtail butterflies copy the wing patterns of toxic species to avoid predators. The study used genomic sequencing and CRISPR and was published in PNAS.
Photo by Marta Costa, Unsplash
Researchers used CT scans and engineering simulations on a Thrinaxodon fossil. Their models show a membrane in the jaw could work as an eardrum, pushing the origin of sensitive mammal hearing back by nearly 50 million years.
Researchers found two special neuron types in the retrosplenial cortex that help navigation. These cells are conserved between mice and rats, linked to spatial disorientation in Alzheimer’s, and are now being studied in humans.
Science educators in India ask the government to restore Darwinian evolution material that NCERT removed from school science textbooks to reduce study load after the COVID-19 pandemic. Hundreds of scientists have criticised the permanent removal.
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