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Richa’s father and his family members were curious to have a male child after Richa, in their family. He used to always blame her mother for giving birth to a girl child and was forcing her to undergo a test for the identification of the sex of the child. Richa’s mother always refused to do this. How do you think Richa as a bright student of biology will convince her father and her family about the criteria of sex determination in human beings. Justify the arguments of Richa and her family by mentioning the positive aspects towards the situation. |
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Answer» Richa will try to convince her family by explaining them about the phenomenon of sex determination in human beings in which male possesses one X and one Y chromosome while, a female has two XX-chromosomes. If an ovum fertilises with a sperm carrying X-chromosome, the zygote develops into a female (XX) while, if an ovum fertilises with sperm carrying Y-chromosome, the zygote develops into a male (XY).Hence, it shows that the genetic make up of sperm, which fertilises the ovum determines the sex of a child. Thus, it is not right to blame a mother for the birth of a girl child as it is a by chance phenomenon because there are both 50-50% chances of having either a male or a female child each time a female becomes pregnant. |
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