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प्रश्न
The region of the chromosome where the spindle fibres get attached during cell division ______
विकल्प
Chromomere
Centrosome
Centromere
Chromonema
उत्तर
The region of the chromosome where the spindle fibres get attached during cell division Centromere.
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संबंधित प्रश्न
Name the sex chromosomes in human males and females
Choose the correct answer:
Chromosomes number is halved in _____________
Choose the correct answer:
During mitosis which of the following disintegrate ___________
(i) Draw a neat labeled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosome.
(ii) How many daughter cells are formed at the end of mitosis and at the end of meiosis?
(iii) With reference to cell division explain the following terms:
(Chromatid, Centromere, Haploid).
(iv) Name the type of cell division that occurs during:
1. Growth of shoot 2. Formation of pollen grains.
3. Repair of worn out tissues.
Name the following:
Cells having a single set of chromosomes.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| Genetics | Chromosomes are similar in size and shape. |
| Autosomes | The alternative forms of a gene. |
| Recessive gene | Study of laws of inheritance of characters |
| Allele | A gene that can express only when in a similar pair. |
| Homologous chromosomes | Chromosomes are other than the pair of sex chromosomes. |
The centromere is found at the centre of the ______ chromosome.
The thin thread-like structures found in the nucleus of each cell are called ______.
After a mitotic cell division, a human female cell will have ______.
