विभिन्न प्रजातियों में वे जीन जो प्रजातीकरण (speciation) के माध्यम से एक साझा पूर्वज जीन से विकसित हुए हैं, क्या कहलाते हैं?

What did the Cambrian Explosion primarily signify in the evolutionary history of the Earth's biosphere?

Which statement most accurately represents the evolutionary significance of behavioural flexibility in animals?

Behavioural plasticity refers to the ability of an organism to modify its behaviour in response to environmental variation without genetic change. Which feature best explains its evolutionary importance?