Neurons have a "hibernation mode." Scientists discover how brain cells use RNA tentacles to lock their protein factories together to survive when energy is low.

A new study suggests that inherited traits explain a small but measurable share of why some people relocate far from where they were born.

Section A covers Biology, with 16 questions carrying 30 marks. Section B covers Chemistry, with 13 questions carrying 25 marks.

Retrotransposons are pivotal in human genome evolution, driving structural variation and regulatory innovation while influencing health and disease.