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Heredity and Evolution
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30/11/2020 4:27 pm
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With the help of a flow chart explain in brief how the sex of a newborn is genetically determined in human beings. Which of the two parents, the mother or the father, is responsible for determination of sex of a child?
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30/11/2020 4:27 pm
Mechanism of Sex Determination in Human Beings:
In human beings, the sex of the individual is genetically determined.
- Sex determination is the process by which sex of a new born individual can be determined.
- Human beings have 1 unpaired sex chromosome. Sex chromosome of male is XY and of female is XX.
- Sex of a child depends on what happens at fertilisation.
Thus, father is responsible for the determination of the sex of a child.