DNA condensation of the duplicated chromosomes during cell division (mitosis or meiosis) results either in a four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends.
Boyds Cave is a 0.7 mile moderately trafficked loop trail located near Bend, Oregon that features a cave and is good for all skill levels. The trail is primarily used for hiking, walking, and horses and is accessible year-round. Dogs are also able to use this trail but must be kept on leash. 0.7 miles 49 feet Loop.
Mammoth cave system is the largest or longest natural cave system in the world as well as in North America or USA. Situated in Kentucky, USA, this longest cave having 567 km of length.It is centered around the Green River, with a tributary and with 145 miles of passageways.iebenhengsteholen-system is the longest or biggest cave system of Switzerland, while sixth longest cave of the world with 140 km length. It is famous for its unusual greenery. It presents the most amazing natural scenery with its green routs and vegetation. Fisher Ridge Cave system was discovered in 1981.