The Abaco Islands. The Abaco Islands consists of several islands and cays (very small islands) that are great for exploring and snorkeling. Andros Island is the Bahamas' largest island but it's also the least developed. Like other Out Islands, Andros Island is ideal for eco-travelers.
bottleneck (bÅt'l-nÄk') An abrupt and severe reduction in the number of individuals during the history of a species, resulting in the loss of diversity from the gene pool. The generations following the bottleneck are more genetically homogenous than would otherwise be expected. Bottlenecks often occur in consequence of a catastrophic event.
Genetic drift can cause big losses of genetic variation for small populations. [evolution.berkeley.edu/evolibrary/article/0_0_0/...] Bottleneck: Reduction in population size that can have major influence on genetic variation because of the relationship between genetic drift and population size. bp: Abbreviation of 'base pairs' (nucleotides).