What will be the sex of the child born :

(a) if X chromosome carrying sperm fuses with an egg cell carrying X chromosome ?

(b) if Y chromosome carrying sperm fertilises an ovum containing X chromosome ?

Q. How many chromosomes are there in human cell? What are sex chromosomes ? What will be the sex of the offspring if a sperm carrying chromosome X fertilises the egg?

Q. When a sperm containing Y chromosome fertilises an egg with X chromosome, the zygote develops into a ______ child.

Q. Due to non-disjunction of chromosomes during spermatogenesis, sperms carry both sex chromosomes (22A + XY) and some sperms do not carry any sex chromosome (22A +O). If these sperms fertilise normal eggs (22A + X), what types of genetic disorders appear among the offsprings?

Q. If a sperm with Y chromosome fuses with an egg, then the offspring will be .

Q. What will happen, if the sperm containing ${}^{\prime }{X}^{\prime }$ chromosomes fertilises the Ovum?