What is the theoretical probability that a normal male child will be born?

The theoretical probability that a normal male child will be born is 1/2 or 50%. This means that for every two children born, one is expected to be male and the other is expected to be female. This probability is based on the fact that human beings have 23 pairs of chromosomes, with one pair determining the sex of the child. Females have two X chromosomes, while males have one X and one Y chromosome. During fertilization, the sperm from the father can either carry an X or a Y chromosome, while the egg from the mother always carries an X chromosome. The chance of the sperm carrying an X or a Y chromosome is roughly equal, which means that there is an equal chance of conceiving a male or female child. Therefore, the theoretical probability of a normal male child being born is 1/2 or 50%.