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प्रश्न
Name the following:
The number of chromosomes present in a nerve cell of a human being.
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उत्तर
46 (23 pairs)
APPEARS IN
संबंधित प्रश्न
State the exact location of the Centromere
Given below is a schematic diagram of a portion of DNA.
- How many strands are shown in the diagram?
- How many nucleotides have been shown in each strand?
- Name the parts numbered 1, 2, 3, 4 and 5 respectively.
- Name the DNA unit constituted by the parts 1, 2, 3 collectively.
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
Choose the correct answer:
Chromosomes number is halved in _____________
Choose the correct answer:
Centromere is related to _______________
Write a sentence of the following:
Telomere
Choose the correct answer:
Chromosomes largely consist of _______________
Choose the correct answer:
Chromosome number of man is _____________
Give Reasons for the following
The meiosis is called reductional division
(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:
Microtubules form the bipolar spindle in which stage.
Name the following:
The part of the cell associated with heredity.
Duplicated chromosomes are joined at a point termed ______.
Write the functional activity of the following structure:
Spindle fibers
Complete the following sentence with appropriate word:
The number of chromosomes in humans is ________.
Give the example of X- monosomy you have studied.
Explain the structure of a chromosome.
The female gamete/egg cell of a human cell will have ______.
