Why was what scientists discovered while studying DNA in 1977 scientifically important?(1 point)

Question

Responses

It challenged previous thinking about mRNA.
It challenged previous thinking about mRNA.
It proved the existence of DNA.
It proved the existence of DNA.
It showed that DNA is found within genes.
It showed that DNA is found within genes.
It confirmed that mRNA in viruses were an outlier.

Answer 1

The correct response is: It challenged previous thinking about mRNA.

In 1977, scientists, including Frederick Sanger, developed methods for sequencing DNA, which led to significant advancements in understanding the structure and function of genes and mRNA. This work revealed complexities about how genetic information is expressed and how mRNA is transcribed from DNA, which ultimately challenged existing notions about these processes.