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Question
The sex of the child is determined at the time of conception in human beings. Justify.
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Solution
In humans’ the sex of the baby is determined by the sperm.
The sperm gamete is heterogametic because roughly half of them contain the X chromosome which will result in a girl and approximately half of them contain the Y chromosome which will result in a boy.
On the other hand, the ova gamete is homogametic, in other words, all its cells possess the X chromosome.
Thus, the ova gamete does not influence the baby’s sex. Therefore when a sperm penetrates the ova and fertilization occurs there are two possible outcomes: XX or a girl and XY or a boy
The sperm gamete is heterogametic because roughly half of them contain the X chromosome which will result in a girl and approximately half of them contain the Y chromosome which will result in a boy.
On the other hand, the ova gamete is homogametic, in other words, all its cells possess the X chromosome.
Thus, the ova gamete does not influence the baby’s sex. Therefore when a sperm penetrates the ova and fertilization occurs there are two possible outcomes: XX or a girl and XY or a boy
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