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.
When did the Chernobyl accident occur and in what country did it take place?   The disaster occurred on On 26 April 1986 at 01:23:40 a.m, in the then USSR, It is now located in Ukraine, a former soviet state.t leaked 100 times the radiation than the two bombs dropped on Japan. Chernobyl is a nuclear power plant that it's reactor 4 e â¦ xploded.It is located in Pripyat, urkrain. It happened August 27, 1987.