The kinetochore fibres contract and spindle or pole fibres elongate during:
Correct answer: D. Anaphase I
- A. Prophase I
- B. Metaphase I
- C. Telophase I
- D. Anaphase I
Explanation
[A] During prophase no separation of chromosomes occurs instead they only condense and thicken during prophase[B] During Metaphase the cell's chromosomes align in the centre(equatorial line) of dividing cell[C] During telophase spindle disappears and nucleus reforms around each of the membrane[D] Kinetochore is a protein attached with centromere,holding two chromatids together. Spindle fibres are connected to kinetochore, spindle fibres contacts causing kinetochore to contact.It is during Anaphase when each pair of chromosomes is separated into two identical chromosomes.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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