Your uncle wants to create a dog small enough to fit into a purse. Of the hundreds of dogs on his farm, he breeds only the smallest 10% of them. He then breeds only the smallest 10% of their offspring, and continues to breed only the smallest 10% of each generation. Over 20 years, his group of dogs did become smaller (though not small enough to fit into a purse). Did he witness evolution?

Evolution is based upon the change in the heritable characteristic features of a species over time. This change does not happen suddenly, it happens gradually over generation after generations. The change in characteristic expression of genes are passed through from parents to their offspring during reproduction.

He kept on breeding only the smallest one's generation after generation for long 20 years. His end result was having the smallest puppies though they are not too small to fit in the purse but still, evolution happened.

luisvaschetto luisvaschetto · Answer 2 · 2021-10-23T13:31:36+02:00

The process of selecting animals with desirable traits across successive generations represents a type of evolution through artificial selection.

The genotype of an organism is the combination of alleles observed in that organism. Moreover, a phenotype is the sum of all observable characteristics of the organism.

In artificial selection, animals or plants with desirable phenotypic traits are selected by humans to reproduce.

The process of artificial selection changes allele frequencies across generations, thereby leading to the evolution of desirable traits in offspring since the phenotype is influenced by the genotype.

In conclusion, the process of selecting animals with desirable traits across successive generations represents a type of evolution through artificial selection.

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