Sudden change in genes
When dna of a species may fused with dna of another Species
Occurence of gradual changes in organism which creates a new species

Tq riya
Change in frequency of genes
Ohk?\u200d♀️?\u200d♀️?\u200d♀️
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Or we can say that the genetic constitution of an organism is its genotype
Genotype describes the characteristics of a particular person
Aise what is genotype?????
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variation in the relative frequency of different genotypes in a small population,

The transfer of inheritant trait from 1generation to another generation to another generation continuously in several generation is called genetic drift