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प्रश्न
Choose the correct answer:
Chromosomes number is halved in ____________
विकल्प
meiosis I
meiosis II
mitosis
amitosis
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उत्तर
Chromosomes number is halved in meiosis I
APPEARS IN
संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
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:
Chromosomes appear at equator in ____________
Mention the contribution of the scientist given below in the study of chromosome:
Balbiani
Enumerate the various changes that occur in the nucleus of the cell during prophase.
(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:
Microtubules form the bipolar spindle in which stage.
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Complete the following sentence with appropriate word :
Polytene chromosomes are found in _________ of fly larvae.
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Nullisomy is represented by ______.
Give the example of X- monosomy you have studied.
The thin thread-like structures found in the nucleus of each cell are called ______.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
The sex of the newborn child is a matter of chance and neither of the parents may be considered responsible for it. What would be the possible fusion of gametes to determine the sex of the child?
The chromosomes are duplicated in ______.
The female gamete/egg cell of a human cell will have ______.
Distinguish between the following pair:
Karyotype and Karyokinesis
