Advertisements
Advertisements
प्रश्न
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
Advertisements
उत्तर
Changes which occur in the nucleus of the cell during mitosis:
During anaphase:
- The two sister chromatids of each chromosome separate and are drawn apart towards the opposite poles.
संबंधित प्रश्न
Name the sex chromosomes in human males and females
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
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Choose the correct answer:
In an interphase cell chromosome are as _____________
Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer
Choose the correct answer:
Chromosomes largely consist of _______________
Why gametes have a haploid number of chromosomes?
What is the importance of meiosis in creating variations?
Differentiate between
Gametic meiosis and Zygotic meiosis.
(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
Complete the following sentence with appropriate word :
The pairing of homologous chromosomes is called _______.
Give Reason:
The Law of independent assortment holds good for the gene pairs that occur in different pairs of chromosomes.
Name the following:
Pairs of chromosomes, present in human egg cells.
Name the following:
Pair of genes responsible for a particular characteristic.
With the help of a neat labelled diagram, describe the structure of chromosome.
Explain the structure of chromosomes with labelled diagram.
The female gamete/egg cell of a human cell will have ______.
In the human male, a sperm contains autosomes and ______.
