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In which phase of cell division is oogonia arrested

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Important Questions on Human Reproduction

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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 4
Germ cells in mammalian gonads are produced by
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 5
The breakage of the membrane surrounding the acrosome in a mammalian sperm is
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 6
How many secondary spermatocytes will be required to form 400 spermatozoa.
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 7
2n=16 in a primary spermatocyte which is in metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocyte
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 8
1st  polar body is formed at which stage of oogenesis
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 9
In oogenesis haploid egg is fertilized by sperm at which stage
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 10
Spermatids are transformed into spermatozoa by
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NTA Errorless Biology Volume-2>Chapter 3 - Human Reproduction>Ordinary Thinking>Q 11
In frog chromosome no. is reduced to half