Mardi Gras-a carnival held in some countries on Shrove Tuesday (the last day before Lent) but especially in New Orleans.
Bottleneck effect is when there's something that either kills the majority of the population or just prevents it from reproducing. This creates genetic drift because the likelihood of gene prominence changing is much higher in a small population. The Founder Effect is a type of Bottleneck effect. It is when a small amount of individuals starts a population usually due to migration.
The founder effect a genetic bottleneck are similar in their effect  on the genetic diversity of a local population in both situations.  They result in the development of a â¦population from a small number  individuals and is likely to have reduced genetic diversity.