BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The circular chromosome replicates
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Replicated chromosomes move to opposite poles of the cell as it elongates
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The cell splits into two genetically identical bacterial cells
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Sister chromatids are separated
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Linear chromosomes line up in the center of the cell
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Detailed explanation-1: -Copying of DNA by replication enzymes begins at a spot on the chromosome called the origin of replication. The origin is the first part of the DNA to be copied. As replication continues, the two origins move towards opposite ends of the cell, pulling the rest of the chromosome along with them.
Detailed explanation-2: -Hence, the first step of binary fission is the duplication or replication of the parent cell’s genetic material (DNA).
Detailed explanation-3: -The single, circular chromosome exists in a region of cytoplasm called the nucleoid. Occurs through binary fission. As the chromosome is replicated, the two copies move to opposite ends of the cell by an unknown mechanism.
Detailed explanation-4: -Initiation of chromosome replication is the first and tightly controlled step of a DNA synthesis. Bacterial chromosome replication is initiated at a single origin, oriC, by the initiator protein DnaA, which specifically interacts with 9-bp nonpalindromic sequences (DnaA boxes) at oriC .