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प्रश्न
Fill the blank circles in figure and identify the sex of child A and B. 
उत्तर
The circle in the figure can be completed as:
A is a girl. The ovum carrying X-chromosome has been fertilised by a sperm carrying X-chromosome, resulting a zygote with XX combination of sex chromosomes. So, the child born will be a female.
B is a boy. In this case, the X-chromosome carrying ovum has been fertilised by a sperm carrying Y-chromosome. This results in formation of zygote with XY combination of sex chromosomes. So, the child born will be a male.
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संबंधित प्रश्न
Write notes on sex determination in the unborn baby.
What are the chromosomes XY and XX known as?
Which of the two, sperm or ovum, decides the sex of the child?
Define the following:
Autosomes
Give Reason:
Why X-linked recessive diseases are more common among males than females.
Explain the haplo-diploid method of sex determination in the honey bee.
Distinguish between heterogametic and homogametic sex determination systems.
Sex is determined in human beings ______.
Female heterogamy is shown by
