Practice of sequencing ancient genomes is helping researchers know more about the Eurasian Bronze Age. Researchers have assessed the genes from 5,000 years ago and have come to know that these people were mainly light-skinned and mostly lactose-intolerant.

The researchers said the Bronze Age ranging from 3000 to 1000 BC is considered to be a crucial time in the human race, as during this time period the society evolved from hunter-gatherers to societies focused on agriculture.

An analysis was carried out on genetic material extracted from the teeth of 101 ancient humans. The analysis has provided an insight into how mass migrations have changed the European population. The researchers wanted to know how migration has played a role in the cultural upheaval. It has been found that they have played an important role.

Study researchers said, "We show that the Bronze Age was a highly dynamic period involving large-scale population migrations and replacements, responsible for shaping major parts of present-day demographic structure in both Europe and Asia".

Rapid expansion of culture known as the Yamnaya was said to be the era's most significant migration. Genetic signatures show that the Yamnaya interbred with the hunter-gatherers and farmers already living in northern Europe.

The researchers also came to know that Bronze Age Europeans had light skin, medium distribution for a gene associated with blue eyes. Just 10% of the European samples showed of a gene that is linked to lactose tolerance.