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प्रश्न
Complete the following sentence with appropriate word :
Polytene chromosomes are found in _________ of fly larvae.
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उत्तर
Polytene chromosomes are found in Salivary glands of fly larvae.
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संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
Fill in the blank
The _______ (s) are surrounded by radiating rays called aster
Choose the correct answer:
Chromosomes appear at equator in ____________
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Differentiate between
Gametic meiosis and Zygotic meiosis.
Identify the stages of meiosven below and label them.
(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.
Explain the Term Centrioles
Name the following:
The part of the cell associated with heredity.
Name the following:
The pattern of arrangement of genes along a chromosome.
Long answer type question.
Describe the different types of chromosomes.
The thin thread-like structures found in the nucleus of each cell are called ______.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
Define the following term:
Chromatid
In the human male, a sperm contains autosomes and ______.
