Separating of chromatids during metaphase and behaviour of chromosomes during mitotic and meiotic divisions can be best studied by

Phase contrast microscope

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X-ray microscope

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Cell fractionation method

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Solution

The correct option is A Phase contrast microscope
The stages of mitosis and meiosis were originally detailed after careful analysis of fixed cells. More recently, time lapse photography coupled with phase contrast microscopy has allowed to visualize the process entirely. This is because, the cellular movements of the live cells can be observed by phase contrast microscope.

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Q. The chromosome separation during metaphase can studied by

Question 28

A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase? What would be the DNA content (C) during anaphase?

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Q. Select the incorrect match regarding mitotic cell division.
(i) Prophase - Chromosomes to begin to uncoil
(ii) Metaphase - Chromatids move apart
(iii) Telophase - The nuclear membrane reappears
(iv) Late anaphase- Each chromosome consists of two anaphase chromatids
(v) Interphase - Chromosomes are not distinct

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