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प्रश्न
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in ______.
पर्याय
Only testis
Only ovary
Both ovary and testis
All body cells
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उत्तर
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in both ovary and testis.
Explanation:
Meiosis is the halving of the number of chromosomes in sex cells or gametes. It occurs in the reproductive organs, specifically the testis and ovary.
संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
What is the difference between chromatin fibre and chromosome?
Given below is a schematic diagram of a portion of DNA.
- How many strands are shown in the diagram?
- How many nucleotides have been shown in each strand?
- Name the parts numbered 1, 2, 3, 4 and 5 respectively.
- Name the DNA unit constituted by the parts 1, 2, 3 collectively.
Choose the correct answer:
Centromere is related to _______________
Choose the correct answer:
Chromosomes number is halved in ____________
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Choose the correct answer:
The term 'chromosome' was coined by ___________
Choose the correct answer:
Chromosomes largely consist of _______________
(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.
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
Name the following:
A specific part of a chromosome that determine hereditary characteristics.
Name the following:
Pair of genes responsible for a particular characteristic.
Give Technical Term:
Transmission of characters through generations.
With the help of a neat labelled diagram, describe the structure of chromosome.
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?
In higher unisexual animals, one pair of chromosomes is not identical in two sexes. It is called as ______.
Normally, genes occur in a pair of chromosome, but genes of X and Y chromosomes shows different gene loci indicating ______.
