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प्रश्न
Women are often blamed for producing female children. Consequently, they are ill-treated and ostracized. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
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उत्तर
Women are never responsible for determination of the sex of a child. Moreover, it is not appropriate to ill-treat a woman for giving birth to a girl child, as both males and females are equally important for the balance of nature and continuity of our species.
All human-beings have 23 pairs of chromosomes. A human sperm (haploid) has 22 autosomes and one of the two types of sex chromosomes, i.e. either X or Y. On the contrary, human females have 22 autosomes that are exactly same as males and contain two X chromosomes. The sex of an individual is determined by the type of the sex chromosome (X or Y) contained by the sperm that fuses with the ovum.
If the fertilising sperm has an X chromosome, then the baby would be a female and if a sperm with Y chromosome fuses with the ovum, it will develop into a male child. Thus, males are responsible for determination of the sex of a child.
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संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
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.
Briefly describe the process of spermatogenesis.
Name the hormones involved in regulation of spermatogenesis.
Name the functions - Acrosome of sperm.
Explain the structure of secondary oocyte.
In meiosis, the number of chromosomes becomes ___________.
The male sex hormone testosterone is secreted from ____________.
Answer the following type of question Assertion (A) and Reason (R).
(A) - In human males, testes are extra-abdominal and lie in scrotal sacs.
(R) - Scrotum acts as a thermoregulator and keeps the temperature lower by 2°C for normal sperm production.
The secondary oocyte enter into the fallopian tube through the ______.
Identify the labels (i-iv) in the given diagram of the ovum.
500 spermatozoa are formed from ____________ secondary spermatocytes.
First meiotic division is observed in ____________.
In human beings, the largest cell formed during Oogenesis is ______
Extrusion of second polar body from egg nucleus occurs ______.
After ovulation, Graafian follicle regresses into ______.
There is no cell division involved in ______.
Corona radia is made up of ______.
The cell which undergoes meiosis I during spermatogenesis is the ______.
At what stage of life is oogenesis initiated in a human female?
Which of the following is a primary sex organ of female?
Mark the odd one.
What is the difference between a primary oocyte and a secondary oocyte?
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
Complete the analogy with respect to the structure of sperm.
Nebenkern : ‘X’ : : Acrosome is formed from : ‘Y’
What are the two main types of gametogenesis based on the organ in which they occur?
Which of the following phases are shared by both spermatogenesis and oogenesis?
