NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the 2nd step of binary fission?
A
The circular chromosome replicates
B
Replicated chromosomes move to opposite poles of the cell as it elongates
C
The cell splits into two genetically identical bacterial cells
D
Sister chromatids are separated
E
Linear chromosomes line up in the center of the cell
Explanation: 

Detailed explanation-1: -The mitotic phase is a multistep process during which the duplicated chromosomes are aligned, separated, and moved to opposite poles of the cell, and then the cell is divided into two new identical daughter cells.

Detailed explanation-2: -Step 2-Growth of a Cell After copying the chromosome, the bacterium starts to grow larger in preparation for binary fissions. It is followed by an increase in cytoplasmic content. Another prominent trait of this stage is that the two strands migrate to opposite poles of the cell.

Detailed explanation-3: -Metaphase leads to anaphase, during which each chromosome’s sister chromatids separate and move to opposite poles of the cell.

Detailed explanation-4: -The changes that occur in the cell during the prophase and telophase stages of the cell cycle are completely opposite to each other. Hence, these phases of mitosis are said to be in contrast with each other.

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