PATHOLOGY

Detailed explanation-1: -Since the ratio of the X chromosome and Y chromosome in a male gamete is 50:50, the probability of male or female infants is also 50:50. Therefore the statistical probability of getting either a male or female child is 50:50 since the sex-determining male sperm has a 50:50 chance of bearing an X or Y chromosome.

Detailed explanation-2: -The sex of an infant is determined by the type of sex chromosome contributed by the male gamete. Since the ratio of male gametes containing X chromosome and those containing Y chromosome is 50:50, the statistical probability of male or a female infant is also 50 : 50.

Detailed explanation-3: -If a Y bearing sperm fertilizes the egg, the zygote will be a male (XY) and when X bearing sperm fertilizes the egg, the resulting zygote will be female (XX). Since the ratio of the X chromosome and the Y chromosome in a male gamete is 50:50. The statistical probability of male or female infants is also 50:50.

Detailed explanation-4: -The ratio of male to female births, called the sex ratio, is about 105 to 100, according to the World Health Organization (WHO). This means about 51% of deliveries result in a baby boy.