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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
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.
APPEARS IN
संबंधित प्रश्न
State the difference between:
Chromosome and chromatid:
Answer the following question in your own words.
What is meant by ‘chromosome’?
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Choose the correct answer:
Chromosomes number is halved in _____________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?
Choose the correct answer:
Chromosome number of man is _____________
What are chromosomes?
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Give Technical Terms
The stage at which chromosomes occurs reach the opposite poles.
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Complete the following sentence with appropriate word :
Polytene chromosomes are found in _________ of fly larvae.
Multiple Choice Question
Chromosomal aberrations are caused by:
Identify the odd one:-
Describe the structure of sex chromosomes with the help of labelled diagram.
The loss of one or more chromosomes in ploidy is called ______.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
Normally, genes occur in a pair of chromosome, but genes of X and Y chromosomes shows different gene loci indicating ______.
