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Question
Differentiate between
Chromatin and Chromosome.
Solution
| 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. |
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RELATED QUESTIONS
The term “chromosomes” literally means ______.
What are genes?
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
State the difference between:
Chromosome and chromatid:
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Differentiate between
Cytokinesis in plant and animal cell
(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 Spindle
Explain the Term Chromosomes
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Write the functional activity of the following structure:
Spindle fibers
Multiple Choice Question
Chromosomal aberrations are caused by:
Explain the structure of a chromosome.
Generally, the recessive character is expressed only when present in a double recessive condition i.e. homozygous condition. However, a single recessive gene can express itself in human beings when the gene is present on ______
Define the following term:
Chromatid
Distinguish between the following pair:
Karyotype and Karyokinesis
