Which of the following statements about sex determination is correct? At fertility

The statement that is correct about sex determination is "the probability of male to female offspring is 1/2". Sex determination is the process by which an individual develops into a male or female. In humans, it is determined by the combination of sex chromosomes received from the parents during fertilization. An egg from the mother always contains an X chromosome, while a sperm from the father may contain either an X or a Y chromosome. If the sperm carrying an X chromosome fertilizes the egg, the resulting offspring will be female (XX), and if the sperm carrying a Y chromosome fertilizes the egg, the resulting offspring will be male (XY). Therefore, the probability of having a male or female offspring is equal, and it is not influenced by the Y chromosome of the father or the XX chromosome of the mother. The vigour of either parent also does not determine the sex of the offspring.