Bottlenecks and Founder Effects. Genetic drift can cause big losses of genetic variation for small populations. Population bottlenecks occur when a populations size is reduced for at least one generation.ottlenecks and Founder Effects. Genetic drift can cause big losses of genetic variation for small populations. Population bottlenecks occur when a populations size is reduced for at least one generation.
Chernobyl, or Chornobyl, is the name of a city situated in northern Ukraine near the border with Belarus. Chernobyl was largely abandoned following the disaster at the Chernobyl Nuclear Power Plant located 14.5 kilometres (9 miles) away.
Chernobyl, Dark Tourism, Ghost Town, Ukraine, USSR. I recently visited the Chernobyl Exclusion Zone â including the abandoned city of Pripyat â as part of a 32-hour Russian-language tour. During my time there I took photos (a lot of photos) featuring villages, schools, holiday camps and train stations throughout the Zone.