Question: Paul Berg was part of a group that won the 1980 Nobel Prize in Chemistry along with a pioneer in which field?

Context paragraphs:
Nobel Prize in Physics: The Nobel Prize in Physics (Swedish: "Nobelpriset i fysik" ) is a yearly award given by the Royal Swedish Academy of Sciences for those who conferred the most outstanding contributions for mankind in the field of physics.  It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others being the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and Nobel Prize in Physiology or Medicine.

Yves Chauvin: Yves Chauvin (] ; October 10, 1930 – January 27, 2015) was a French chemist and Nobel Prize laureate.  He was honorary research director at the "Institut français du pétrole" and a member of the French Academy of Science.  He was known for his work for deciphering the process of metathesis for which he was awarded the 2005 Nobel Prize in Chemistry along with Robert H. Grubbs and Richard R. Schrock.

Walter Gilbert: Walter Gilbert (born March 21, 1932) is an American biochemist, physicist, molecular biology pioneer, and Nobel laureate.

Ada Yonath: Ada E. Yonath (Hebrew: עדה יונת‎ ‎ , ] ) (born 22 June 1939) is an Israeli crystallographer best known for her pioneering work on the structure of the ribosome.  She is the current director of the Helen and Milton A. Kimmelman Center for Biomolecular Structure and Assembly of the Weizmann Institute of Science.  In 2009, she received the Nobel Prize in Chemistry along with Venkatraman Ramakrishnan and Thomas A. Steitz for her studies on the structure and function of the ribosome, becoming the first Israeli woman to win the Nobel Prize out of ten Israeli Nobel laureates, the first woman from the Middle East to win a Nobel prize in the sciences, and the first woman in 45 years to win the Nobel Prize for Chemistry.  However, she said herself that there was nothing special about a woman winning the Prize.

Paul Berg: Paul Berg (born June 30, 1926) is an American biochemist and professor emeritus at Stanford University.  He was the recipient of the Nobel Prize in Chemistry in 1980, along with Walter Gilbert and Frederick Sanger.  The award recognized their contributions to basic research involving nucleic acids. Berg received his undergraduate education at Penn State University, where he majored in biochemistry.  He received his Ph.D. in biochemistry from Case Western Reserve University in 1952.  Berg worked as a professor at Washington University School of Medicine and Stanford University School of Medicine, in addition to serving as the director of the Beckman Center for Molecular and Genetic Medicine.  In addition to the Nobel Prize, Berg was presented with the National Medal of Science in 1983 and the National Library of Medicine Medal in 1986.  Berg is a member of the Board of Sponsors for the "Bulletin of the Atomic Scientists".

List of Danish Nobel laureates: This is a list of Danish Nobel laureates.  Since the Nobel Prize was established per the will of Swedish inventor Alfred Nobel in 1895, 12 of the prize winners have been from Denmark.  The first Danish Nobel laureate was Niels Ryberg Finsen, who won a Nobel Prize for medicine in 1903 for his work in using light therapy to treat diseases.  The most recent Danish Nobel Prize winner was Jens Skou who won the prize in chemistry for his discovery over the enzyme, Na+/K+-ATPase in 1997.  To date, of the 13 Nobel Prizes won by Danish people, 5 have been for medicine, 3 have been for physics, 3 have been for literature, 1 has been for chemistry and one has been for peace.

Aziz Sancar: Aziz Sancar (born 8September 1946) is a Turkish-American biochemist and molecular biologist specializing in DNA repair, cell cycle checkpoints, and circadian clock.  In 2015, he was awarded the Nobel Prize in Chemistry along with Tomas Lindahl and Paul L. Modrich for their mechanistic studies of DNA repair.  He has made contributions on photolyase and nucleotide excision repair in bacteria that have changed his field.

Frederick Sanger: Frederick Sanger ( ; 13 August 1918 – 19 November 2013) was a British biochemist who twice won the Nobel Prize in Chemistry, one of only two people to have done so in the same category (the other is John Bardeen in physics), the fourth person overall with , and the third person overall with two Nobel Prizes in the sciences.  In 1958, he was awarded a Nobel Prize in chemistry "for his work on the structure of proteins, especially that of insulin".  In 1980, Walter Gilbert and Sanger shared half of the chemistry prize "for their contributions concerning the determination of base sequences in nucleic acids".  The other half was awarded to Paul Berg "for his fundamental studies of the biochemistry of nucleic acids, with particular regard to recombinant DNA".

Nobel Prize in Literature: Since 1901, the Nobel Prize in Literature (Swedish: "Nobelpriset i litteratur" ) has been awarded annually to an author from any country who has, in the words of the will of Alfred Nobel, produced "in the field of literature the most outstanding work in an ideal direction" (original Swedish: "den som inom litteraturen har producerat det mest framstående verket i en idealisk riktning").  Though individual works are sometimes cited as being particularly noteworthy, here "work" refers to an author's work as a whole.  The Swedish Academy decides who, if anyone, will receive the prize in any given year.  The academy announces the name of the chosen laureate in early October.  It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895; the others are the Nobel Prize in Chemistry, Nobel Prize in Physics, Nobel Peace Prize, and Nobel Prize in Physiology or Medicine.

List of Nobel laureates in Chemistry: The Nobel Prize in Chemistry (Swedish: "Nobelpriset i kemi" ) is awarded annually by the Royal Swedish Academy of Sciences to scientists in the various fields of chemistry.  It is one of the five Nobel Prizes established by the 1895 will of Alfred Nobel, who died in 1896.  These prizes are awarded for outstanding contributions in chemistry, physics, literature, peace, and physiology or medicine.  As dictated by Nobel's will, the award is administered by the Nobel Foundation and awarded by a committee that consists of five members elected by the Royal Swedish Academy of Sciences.  The first Nobel Prize in Chemistry was awarded in 1901 to Jacobus Henricus van 't Hoff, of the Netherlands.  Each recipient receives a medal, a diploma and a monetary award prize that has varied throughout the years.  In 1901, van 't Hoff received 150,782 SEK, which is equal to 7,731,004 SEK in December 2007.  The award is presented in Stockholm at an annual ceremony on December 10, the anniversary of Nobel's death.

Supporting paragraphs: Paul Berg Walter Gilbert
Answer: molecular biology