Having previously genetically engineered mice to lack melanopsin, the team first tested the pupillary light reflex on irises from these mice. âThat was a really exciting resultâthey didnât respond to the light,â says Tian Xue, a research associate with Yau. They also tested mice engineered to lack other light-capturing pigments, but all of them responded normally, suggesting that only melanopsin is required for the local pupil reflex.
The water of the Nile River provided a few things that were important to the growth of civilization in Ancient Egypt. The Ancient Egyptians needed water, as all humans do, to support life.Water from the Nile also attracted thirsty animals such as the water buffalo and camels. Water also was necessary for the growth of agriculture, the major economic activity of Ancient Egyptians.est Answer: The presence of the Nile River and the Nile River Valley in Ancient Egypt greatly influenced the culture of its people. The ancient Egyptians began with small settlements around the Nile River and were able to make permanent settlements only because of the presence of the Nile.
Ancient Egypt, one of historyâs first civilizations arose around the Nile River about 5,000 years ago. It lasted for over 2,000 years. The Nile River was the centre of Ancient Egypt.The annual floods brought rich black soil to the banks of the Nile River and made it possible for farmers to grow crops.The river was also Egyptâs main transportation route.he Nile River was the centre of Ancient Egypt. The annual floods brought rich black soil to the banks of the Nile River and made it possible for farmers to grow crops. The river was also Egyptâs main transportation route.