الحمض النووي يحل لغز تماسيح سيشل المفقودة

الحمض النووي يحل لغز تماسيح سيشل المفقودة

كشف تحليل الحمض النووي لعينات متحفية تاريخية أن تماسيح سيشل المنقرضة لم تكن نوعاً فريداً. بل كانت مجموعة معزولة من تماسيح المياه المالحة وصلت على الأرجح عبر الانجراف لمسافات شاسعة في المحيط الهندي.

AI

ملخص الذكاء الاصطناعي

  • كشف تحليل الحمض النووي لعينات متحفية تاريخية أن تماسيح سيشل المنقرضة لم تكن نوعاً فريداً. بل كانت مجموعة معزولة من تماسيح المياه المالحة وصلت على الأرجح عبر الانجراف لمسافات شاسعة في المحيط الهندي.
  • تُظهر الدراسة كيف يمكن للعينات المتحفية القديمة أن تعيد كتابة فهمنا للتنوع الحيوي والهجرة الطبيعية للأنواع عبر المحيطات.
  • Scientists have solved the mystery of the Seychelles’ vanished crocodiles using DNA from historic museum specimens. The reptiles were not a unique species after all, but an isolated population of saltwater crocodiles that likely drifted thousands of kilometers across the Indian Ocean.

Scientists have solved the mystery of the Seychelles’ vanished crocodiles using DNA from historic museum specimens. The reptiles were not a unique species after all, but an isolated population of saltwater crocodiles that likely drifted thousands of kilometers across the Indian Ocean.

اقرأ أيضا

New superconducting X-ray detector is up to 1,000 times more sensitive الأبحاث

New superconducting X-ray detector is up to 1,000 times more sensitive

A groundbreaking superconducting X-ray spectrometer has begun operation at BESSY II, giving Europe its first TES-based system and boosting photon detection efficiency by up to 1,000 times. The advance enables scientists to explore atomically thin materials, nanostructures, and ultra-dilute samples with remarkable speed and sensitivity.

Why middle age is becoming a breaking point in the U.S. الأبحاث

Why middle age is becoming a breaking point in the U.S.

A new international study finds that middle-aged Americans are lonelier, more depressed, and experiencing worse memory and health than earlier generations. Researchers say growing financial strain, weaker social supports, and chronic stress may explain why the U.S. is falling behind other wealthy nations.

Scientists mapped every neural connection in a fruit fly and found a surprise الأبحاث

Scientists mapped every neural connection in a fruit fly and found a surprise

A groundbreaking new connectome maps every neural connection in an adult fruit fly’s central nervous system, creating an unprecedented view of how the brain and body work together. The findings suggest that complex behaviors emerge from distributed local circuits rather than a single central controller, offering new clues about intelligence, movement, and brain function.