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प्रश्न
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
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उत्तर
- A female has millions of oocytes at the time of birth and new ova are not formed thereafter.
- Menopause occurs at approximately 40-50 years of age and hence fewer numbers of eggs are present with reduced fertility since the oocytes have aged.
- Their ability to divide diminishes and they may not be able to complete meiotic division properly.
- Fertilization of such oocytes may result in the production of genetic abnormalities (like Down’s syndrome) in offsprings.
Hence, if newborns are produced at the age of menopause, they may be with some abnormalities.
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संबंधित प्रश्न
The process of release of the ovum from a mature follicle is called ______.
Describe the process of budding in hydra.
Explain the structure of secondary oocyte.
Mammalian egg is ____________.
Give a schematic representation of spermatogenesis and oogenesis in humans.
During spermatogenesis, spermatogonium grows in size to become ______.
Middle piece of mammalian sperm possesses ______.
Connective tissue around seminiferous tubules possess endocrine cells called ______.
Spermiation is the process of the release of sperm from ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
Preparation of sperm before penetration of ovum is ______.
How many sperms are formed from 4 primary spermatocytes?
The principal tail piece of human sperm shows the microtubular arrangement of ______.
Which of the following is a primary sex organ of female?
Mark the odd one.
Which of the following cells during gametogenesis is normally diploid?
Capacitation refers to changes in the ______.
Which type of cell division forms spermatids from the secondary spermatocytes?
How many spermatozoa are formed from one secondary spermatocyte?
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
