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प्रश्न
Differentiate between
Chromatin and Chromosome.
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उत्तर
| Chromatin | Chromosome | |
| (i) | Uncondensed form of nucleoprotein. | Condensed form of nucleoprotein. |
| (ii) | Seen in interphase stage of cell division. | Seen in M-phase. |
| (iii) | Control of metabolic activities. | Vehicles of heredity. |
APPEARS IN
संबंधित प्रश्न
Name the following:
The number of chromosomes present in a nerve cell of a human being.
Choose the best option out of the four alternatives a, b, c and d
Question 1:
The number of chromosomes in a certain type of cell division is halved. This kind of cell
division occurs in.
(a) Only testis
(b) Only ovary
(c) Both ovary and testis
(d) All body cells
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
Choose the correct answer:
Centromere is related to ________
Choose the correct answer:
Centromere is related to _______________
Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________
Give Reasons for the following
Chromosomes are the carriers of heredity.
(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:
The part of the cell associated with heredity.
Write the functional activity of the following structure:
Chromosome
Give Technical Term:
Transmission of characters through generations.
With the help of a neat labelled diagram, describe the structure of chromosome.
Describe the structure of sex chromosomes with the help of labelled diagram.
The centromere is found at the centre of the ______ chromosome.
______ is a sudden permanent heritable change that can occur in the gene, in the chromosome or chromosome number.
What' does 'P' and 'Q' represent in the following diagram of X and Y chromosomes? Select the correct option representing, its appropriate description.
Identify the TRUE statements with respect to aneuploidy.
- When the chromosome number is not the exact multiple of the haploid set, it is described as aneuploidy.
- Aneuploidy is only addition of one or more chromosome(s) to the total number of chromosomes in a cell.
- Aneuploidy is further classified as hypoploidy and hyperploidy.
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 ______.
