The figure below is a Punnett Square which shows the inheritance of the
sex chromosomes. The female sex chromosomes is represented with
XX and the male sex chromosomes is represented with XY.

1. Based on this Punnett Square, how many of children would
you expect to be a male or a female?
2. What will be the gender of a child produced when an egg is
fertilized by a sperm that has a Y chromosome?
3. What type of a sperm must fertilize an egg to result in a female
child?
4. Which sex chromosome is present in both male and female?​