THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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has a single centromere
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has telomeres
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is circular
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does not undergo supercoiling
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Detailed explanation-1: -While most prokaryotes, like E. coli, contain a single circular DNA molecule that makes up their entire genome, recent studies have indicated that some prokaryotes contain as many as four linear or circular chromosomes. For example, Vibrio cholerae, the bacteria that causes cholera, contains two circular chromosomes.
Detailed explanation-2: -The Escherichia coli chromosome is 4.6 Mb long, circular, and contains a single origin of replication. These characteristics present challenges for replication and segregation, which can nonetheless be completed as quickly as every 20 min.
Detailed explanation-3: -The DNA of E. coli is present in the cytoplasm due to lack of a well-developed nucleus. It contains a single chromosome located in the middle of the bacterial cell. It is a double-stranded molecule that is circular in structure.
Detailed explanation-4: -1: Prokaryotic Genome: Prokaryotes, including bacteria and archaea, have a single, circular chromosome located in a central region called the nucleoid. In eukaryotes, the genome consists of several double-stranded linear DNA molecules packaged into chromosomes.