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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

If newborns are produced at the age of menopause, they may be with some abnormalities. Why?

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प्रश्न

If newborns are produced at the age of menopause, they may be with some abnormalities. Why?

थोडक्यात उत्तर
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उत्तर

  1. A female has millions of oocytes at the time of birth and new ova are not formed thereafter.
  2. 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.
  3. Their ability to divide diminishes and they may not be able to complete meiotic division properly.
  4. 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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पाठ 3: Life Processes in Living Organisms Part - 2 - Answer the following questions [पृष्ठ ३३]

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एससीईआरटी महाराष्ट्र Science and Technology Part 2 [English] Standard 10 Maharashtra State Board
पाठ 3 Life Processes in Living Organisms Part - 2
Answer the following questions | Q 10. | पृष्ठ ३३

संबंधित प्रश्‍न

Give the name and function for ‘A’ and ‘B’ from the diagram given below


Ovulation is induced by a hormone called ______.


Briefly describe the process of spermatogenesis.


Multiple choice question.

The given figure shows human sperm. Various parts of it are labelled as A, B, C, and D. Which labelled part represents acrosome?


Expand the acronym.

hCG


The part labelled as ______ contains the energy source that facilitates sperm motility.


Which is the correct order of steps occurring during spermatogenesis?


Middle piece of mammalian sperm possesses ______.


Besides activating the egg another role of a sperm is to carry ______ to egg.


The head of the epididymis at the head of the testis is called ______.


Which of the following are called dual gland?


Observe the given figure and answer the questions that follow.

  1. Label A and B.
  2. Identify the process.
  3. What happens during this process and what is formed?

Fetal sex can be determined by examining cells from amniotic fluid looking for:


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:


How many primary oocytes produce one oogonia?


During spermatogenesis meiosis occurs in ______.


Process of maturation and development of sperms ______.


The diagram given below shows the various steps in spermatogenesis.

  1. Name the parts labelled '1', '2' and '3'.
  2. Name the process by which part '3' changes to part '4'.

What is the primary purpose of gametogenesis in organisms?


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