TOP 5 STRANGE SMELLS: 1  1. Dead Animal. 2  2. Something Smells Fishy. 3  3. Sewage. 4  4. Moldy and Musty. 5  5. Rotten Eggs. 6  For tips on saving money and energy this winter, take a look at our previous blog posts:
Genetic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling. That is, the alleles in the offspring in the population are a random sample of those in the parents.
Genetic drift reduces genetic variability of a population by decreasing the size of the population. The change in population size and variability often leads to new species and unique populations.