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प्रश्न
In meiosis, the number of chromosomes becomes ___________.
पर्याय
multiple times
triple
half
double
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उत्तर
In meiosis, the number of chromosomes becomes half.
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संबंधित प्रश्न
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions:
- Acrosome
- Nucleus
- Middle piece
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
At what stage of development are the gametes formed in newborn male and female?
Identify the labels (i-iv) in the given diagram of the ovum.
Identify the correct stages (P - S) in the given diagram of spermatogenesis.
Select the pair of cells which does not divide further by mitosis.
Conversion of spermatid into sperm is called as _______.
How many autosomes does a human primary spermatocyte have?
How many sperms are formed from a secondary spermatocyte?
Cells of corona radiata remain grouped together by ______.
Gray crescent is the area ______.
The prostate gland and seminal vehicle perform the function of ______.
In the process of fertilization, this is true:
If for a species 2n = 16, then during Ist prophase and IInd prophase of the meiotic division of a cell, how many tetrads and diads will be formed:
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?
Meiotic division of the secondary oocyte completed ______.
Distinguish between human sperm and ovum.
