Concept explainers
Mycoplasma is a type of bacteria, which are mostly pathogenic to humans and animals. Mycoplasma tuberculi and Mycoplasma mycoides are the some species which causes tuberculosis and pneumonia infection in humans. Mycoplasma lacks cell wall and all of them are resistant to a wide spectrum of antibiotics.
Answer to Problem 1TQ
To differentiate the DNA of Mycoplasma capricolum from the synthetic DNA of Mycoplasma mycoides Daniel Gibson added a blue pigment gene that encodes for blue pigment.
Therefore, option (c) is correct.
Explanation of Solution
Justify reasons for the correct statement:
Gene is the hereditary material composed of
Option (c) is given as “Gene”.
Hence, option (c) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “cell”.
The cell is functional unit of all living organisms. Mycoplasma is prokaryotic cell that itself cannot be used to differentiate the synthetic DNA. Only gene can able to differentiate synthetic DNA. Hence, it is a wrong answer.
Option (b) is given as “chromosome”.
Chromosome is a structure present inside nucleus with condensed DNA that contains millions of gene and not a single gene. Gene is more responsible for the coding of blue pigment expression and not the chromosome. Hence, it is a wrong answer.
Option (d) is given as “bacterium”.
The bacterium is a cell and general term, which generally depicts all bacterial communities. A single bacterium hosts millions of gene its plasmid and DNA. Gene is responsible for expression of blue pigment. Hence, it is a wrong answer.
Hence, options (a), (b), and (d) are incorrect.
Gene is a functional hereditary unit on DNA and its expression and product brings the phenotypic reflection in an organism.
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Chapter 4 Solutions
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