Question

Which of those ancient populations is the most likely to have contributed significantly to the bottleneck effect in the YDNA variation observed across much of Eurasia?

1. Yamnaya
2. Denisovans
3. Basal Eurasians
4. Ancient North Eurasians
5. Gravettians

Answer 1

The correct answer is "Yamnaya".

Step-by-step explanation:

In genetics, a population or genetic bottleneck is defined as a reduction on the size of a population as a result of an environmental effect or human intervention. Regarding the Y chromosome bottleneck, the Yamnaya is an ancient population that contributed the most due to its sex-biased and stratified culture. The Yamnaya were violent and left behind many male skeletons, where just few type of persons were able to reproduce.