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The separation of two chromatids of each chromosome at early anaphase is initiated by
- a)The interaction of centromere with the chromosomal fibres
- b)The elongation of metaphasic spindle
- c)The force of repulsion between the dividend kinetochores
- d)All of these
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The separation of two chromatids of each chromosome at early anaphase ...
Kinetochore is a plate-like structure by which microtubules of the spindle attach to the centromere of a chromosome during nuclear division. The centromere of each chromosome divides into two, so that each chormatied comes to have its own centromere. The two chromatids now start repelling each otherand separate completely to become daughter chromosmes. the daughter or new chromosmes. The daughter or new chromosomes move towards the poles of spindle along the path of their chromosome fibres.
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The separation of two chromatids of each chromosome at early anaphase ...
The correct answer is option 'C' - The force of repulsion between the dividend kinetochores.
During early anaphase of cell division, the separation of two chromatids of each chromosome is initiated by the force of repulsion between the dividend kinetochores. Let's understand this process in detail:
1. Anaphase:
Anaphase is the third stage of cell division, following prophase and metaphase. It is characterized by the separation of sister chromatids, which were previously held together at the centromere region.
2. Centromere and Chromosomal Fibres:
The centromere is a specialized region of the chromosome that holds the sister chromatids together. It is important for proper chromosome segregation during cell division.
3. Kinetochore:
The kinetochore is a protein structure that forms on the centromere region of each chromatid. It serves as an attachment site for the spindle fibers, which are responsible for moving and separating the chromatids during cell division.
4. Force of Repulsion:
During early anaphase, the spindle fibers attached to the kinetochores start to shorten, exerting a pulling force on the chromatids. As the spindle fibers shorten, they generate a force of repulsion between the dividend kinetochores.
5. Separation of Chromatids:
The force of repulsion between the dividend kinetochores causes the chromatids to separate and move towards opposite poles of the cell. This separation ensures that each daughter cell receives a complete set of chromosomes during cell division.
In conclusion, the separation of two chromatids of each chromosome at early anaphase is initiated by the force of repulsion between the dividend kinetochores. This force is generated by the shortening of spindle fibers attached to the kinetochores, leading to the proper segregation of chromosomes during cell division.
During early anaphase of cell division, the separation of two chromatids of each chromosome is initiated by the force of repulsion between the dividend kinetochores. Let's understand this process in detail:
1. Anaphase:
Anaphase is the third stage of cell division, following prophase and metaphase. It is characterized by the separation of sister chromatids, which were previously held together at the centromere region.
2. Centromere and Chromosomal Fibres:
The centromere is a specialized region of the chromosome that holds the sister chromatids together. It is important for proper chromosome segregation during cell division.
3. Kinetochore:
The kinetochore is a protein structure that forms on the centromere region of each chromatid. It serves as an attachment site for the spindle fibers, which are responsible for moving and separating the chromatids during cell division.
4. Force of Repulsion:
During early anaphase, the spindle fibers attached to the kinetochores start to shorten, exerting a pulling force on the chromatids. As the spindle fibers shorten, they generate a force of repulsion between the dividend kinetochores.
5. Separation of Chromatids:
The force of repulsion between the dividend kinetochores causes the chromatids to separate and move towards opposite poles of the cell. This separation ensures that each daughter cell receives a complete set of chromosomes during cell division.
In conclusion, the separation of two chromatids of each chromosome at early anaphase is initiated by the force of repulsion between the dividend kinetochores. This force is generated by the shortening of spindle fibers attached to the kinetochores, leading to the proper segregation of chromosomes during cell division.
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The separation of two chromatids of each chromosome at early anaphase is initiated bya)The interaction of centromere with the chromosomal fibresb)The elongation of metaphasic spindlec)The force of repulsion between the dividend kinetochoresd)All of theseCorrect answer is option 'C'. Can you explain this answer?
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The separation of two chromatids of each chromosome at early anaphase is initiated bya)The interaction of centromere with the chromosomal fibresb)The elongation of metaphasic spindlec)The force of repulsion between the dividend kinetochoresd)All of theseCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The separation of two chromatids of each chromosome at early anaphase is initiated bya)The interaction of centromere with the chromosomal fibresb)The elongation of metaphasic spindlec)The force of repulsion between the dividend kinetochoresd)All of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The separation of two chromatids of each chromosome at early anaphase is initiated bya)The interaction of centromere with the chromosomal fibresb)The elongation of metaphasic spindlec)The force of repulsion between the dividend kinetochoresd)All of theseCorrect answer is option 'C'. Can you explain this answer?.
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