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प्रश्न
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
पर्याय
1 to 2 million
2 to 3 million
2 to 4 million
none of these
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उत्तर
At the time of birth, there are 2 to 4 million oocytes in the ovary of a female foetus.
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संबंधित प्रश्न
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
The process of release of the ovum from a mature follicle is called ______.
Describe the process of budding in hydra.
Implantation of embryo occurs in ______.
Identify the diploid cell.
500 spermatozoa are formed from ____________ secondary spermatocytes.
Which is the correct order of steps occurring during spermatogenesis?
First meiotic division is observed in ____________.
In spermatogenesis, reduction division of chromosome occurs during conversion of ______.
Mark the odd one.
Sperms can be stored for several years in liquid nitrogen with a temperature of ______.
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:
Growth hormone of pituitary is more effective in ______.
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?
In spermatogenesis, at the end of the first meiotic division ______ are formed.
Process of maturation and development of sperms ______.
What is spermatogenesis?
In which structures does spermatogenesis occur?
In which organ does oogenesis take place?
Which of the following phases are shared by both spermatogenesis and oogenesis?
