Final answer:
Human genome sequencing is considered the biggest scientific achievement due to its impact on genetics and medicine.
Step-by-step explanation:
Out of the options given, I consider the human genome sequencing to be the biggest scientific achievement/advancement. The discovery of human genomes has led to significant advancements in genetics and medicine. It has provided insights into the understanding of genetic diseases, personalized medicine, and the development of new treatments.
By sequencing the human genome, scientists have been able to identify genes associated with diseases, such as cancer and genetic disorders, leading to better diagnostic tools and targeted therapies. Additionally, it has opened up new possibilities for gene editing technologies like CRISPR, which holds promise for treating genetic diseases.
In summary, the Human Genome Project and subsequent advancements in human genome sequencing have revolutionized our understanding of genetics and have had a profound impact on the field of medicine.