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प्रश्न
Multiple Choice Question:
The period between two successive mitotic divisions is
पर्याय
Diakinesis
Interphase
Anaphase
Mitosis
उत्तर
Interphase
APPEARS IN
संबंधित प्रश्न
What is the number of chromosomes in the gametes of human beings?
What is the difference between chromatin fibre and chromosome?
Match the events given in column A with the phase in mitotic cell division in column B.
| Column ‘A’ | Column ‘B’ | ||
| 1. | Chromosomes get arranged in a horizontal plane at the equator. |
a. | Anaphase |
| 2. | Daughter chromosomes move to the opposite poles of a spindle |
b. | Prophase |
| 3. | Chromosomes become visible as fine, long threads. |
c. | Telophase |
| 4. | Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network. |
d. | Metaphase |
Mention whether the following statement is (T) Or (F). Give reason in support of your answer.
The unfertilized human egg has half the number of chromosomes of the body cells.
Choose the correct answer:
Chromosomes are thin and thread like at __________
Choose the correct answer:
Chromosome number of man is _____________
Why gametes have a haploid number of chromosomes?
What is the importance of meiosis?
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.
Name the following:
Pairs of chromosomes, present in human egg cells.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
In humans, the sex chromosome complement is
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
______ is a sudden permanent heritable change that can occur in the gene, in the chromosome or chromosome number.
Define Aneuploidy.
A male gorilla has 48 chromosomes in each of its body cells. How many chromosomes will each of the sperms have?
Define the following term:
Chromosome
In the human male, a sperm contains autosomes and ______.
