Question

Which of the following model organisms has been sequenced?
A. Drosophila
B. Bacteria
C. Yeast
D. All

Answer 1

Hint: Finding the nucleic acid sequence, or the order of nucleotides in DNA, is the process of DNA sequencing. The four bases—adenine, guanine, cytosine, and thymine—are arranged in this way using any technique or technology. Rapid DNA sequencing techniques have significantly sped up biological and medical research and discoveries.
Complete step-by-step solution:
Whole genome sequencing (WGS), also known as whole genome sequencing, complete genome sequencing, or entire genome sequencing, is a method for determining all, or nearly all, of the DNA sequence of an organism's genome at once.
In March 2000, the Drosophila melanogaster genome sequencing experiment was virtually finished. The whole genome shotgun (WGS) method was used to finish the sequencing, which was started using mapped large-insert clones. This is the first time the WGS method has been used to sequence a multicellular organism.
A common approach in research, clinical diagnostic, and public health labs is bacterial whole genome sequencing (WGS). It allows for high-resolution characterization of bacterial pathogens in terms of traits including pathogenicity, molecular epidemiology, and antibiotic resistance.
The first fully finished eukaryotic genome, which consists of 16 chromosomes from Saccharomyces cerevisiae, was sequenced in the early 1990s by a global group of researchers from 19 different nations working in 94 laboratories utilizing a variety of sequencing techniques and technologies.
Hence, option D is correct, i.e., All (Drosophila, Bacteria, and Yeast).
Note: Early in the 1970s, academic researchers employed time-consuming techniques based on two-dimensional chromatography to extract the first DNA sequences. DNA sequencing has been simpler and a lot faster with the invention of fluorescence-based sequencing techniques with DNA sequences.