The major breakthrough in biotechnology of pre 20th century include(s) ____?
The major breakthrough in biotechnology of pre 20th century include(s) ____?
بیسویں صدی سے پہلے کے بائیوٹیکنالوجی میں سب سے بڑی پیشرفت میں (زبانیں) ____ شامل ہیں؟
Explanation
The smallpox vaccine (1796) by Edward Jenner and rabies vaccine (1885) by Louis Pasteur were key biotech advances before the 20th century.
DNA structure was discovered later in the mid-20th century.
Artificial sweeteners also post-date that era.