What is gene drift? Under what conditions does it happen? What effect can genetic drift have?

1) Gene drift is a change in the frequency of occurrence of allelic variants of genes in a population.
2) Generally, gene drift occurs as a result of a sharp decline in the population
3) As a result of gene drift, the frequency of occurrence of certain alleles may change

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.