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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
How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
Male and female gametes are ______.
Define spermiogenesis.
Describe the process of budding in hydra.
______ type of reproduction occurs without fusion of gametes.
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?
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
At what stage of development are the gametes formed in newborn male and female?
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
The part labelled as ______ contains the energy source that facilitates sperm motility.
Calculate the number of sperms and ova produced from 40 primary spermatocytes and 40 primary oocytes.
The immature male germ cells differentiates into ______ at the end of meiosis I.
Draw a labelled diagram of a Graafian Follicle.
Select the pair of cells which does not divide further by mitosis.
After ovulation, Graafian follicle regresses into ______.
Which of the following contains a fluid filled cavity called antrum?
Spermiation is the process of the release of sperm from ______.
At what stage of life is oogenesis initiated in a human female?
Which of the following is a primary sex organ of female?
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:
Which of the following cells during gametogenesis is normally diploid?
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?
Which type of cell division forms spermatids from the secondary spermatocytes?
During spermatogenesis meiosis occurs in ______.
Meiotic division of the secondary oocyte completed ______.
Sketch and label the process of oogenesis.
